For QA Testing Purposes Only. To be reverted once testing is completed. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
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From rugged hydraulics and market-leading pneumatics to next-generation electrics and integrated valve-operated systems, Emerson provides a comprehensive line of actuators and the network controls and monitoring systems that enable you to get the most out of them.
A flexible portfolio of solutions for digitalizing operations and processes across a diverse range of industrial value chains. Achieve superior operational performance by harnessing the power of your data to drive faster, more intelligent decision making. Our Emerson portfolio of advanced industry software uses real-time modelling, digital twins, machine learning and artificial intelligence to deliver the right information to the right people, right when it’s needed.
As industrial facilities have become more complex, so has asset management. Monitoring predictive technologies, CMMS, and documented work processes creates great stores of data, but how do you make sense of it? Emerson’s Asset Performance Management solutions empower you to develop a strategic plan and to deliver a sophisticated, holistic approach to Asset Performance Management, whether at a single facility or across your global enterprise.
Optimization is the key to a sustainable and profitable future. Emerson’s control and software solutions empower you to build safer, secure, and more environmentally efficient manufacturing processes tailored to your specific needs. With DeltaV, Ovation and other Emerson solutions give you higher product quality, more efficient tuning, more refined control, and better process visibility so that the right people always have the right information where and when they need it.
Safety and reliability mean efficiency. That’s why Emerson’s control and safety systems are designed to make your manufacturing processes safer and more sustainable. With a comprehensive system approach – from distributed control systems to safety instrumented systems – Emerson combines cutting edge technology with industry-specific engineering, consulting, project management and maintenance services. Our experts are ready to help improve your operations in an easy, intuitive, and interoperable way.
Electrical infrastructures demand solutions that provide protection of people and equipment in challenging environments. Emerson’s portfolio of electrical and lighting products provides certified protection for your applications. Our trusted Appleton, EasyHeat, Nelson and O-Z/Gedney brands make electrical installations safer, more productive, and more reliable.
Emerson’s next-generation industrial and factory automation technologies help manufacturers access and harness critical data to drive continuous improvement, ensure safe, reliable and sustainable processes, and optimize overall efficiency and productivity from edge to enterprise.
The most exacting processes require the most exacting measurements. Emerson’s field-proven technologies are designed to stand up to the toughest conditions and respond to the most complex analytical challenges, with sensors for everything from pressure, temperature, and flow measurement to corrosion, viscosity, and sanitary assessments. And with Emerson’s industrial wireless technology, you’ll receive comprehensive data swiftly, no matter where your instruments are situated.
Emerson’s Operations Management Software is designed to overcome the inefficiencies that can arise as you pursue digital transformation. Emerson’s powerful software enables you to truly unlock the power of your data to drive efficiency and profitability for your operations. With solutions that manage your operations and leverage the power of machine learning and digital twin simulations, Emerson’s software gives you more power than ever before to realize operational excellence.
Emerson counts RIDGID, Greenlee, Klauke & ProTeam among its portfolio of professional tools businesses, with reliable tools and vacs, connected equipment and software technologies for those working in mechanical, electrical, plumbing, and commercial trades. Emerson’s professional tools & vacs help your employees tackle your industry’s toughest challenges.
Emerson offers pressure regulating products for compressed air, natural gas, steam, fuel, propane, specialty gases, water, and other process fluids, with design innovations and durability suitable for the harshest and most hazardous environments in the world. From Fisher and Tartarini direct and pilot operated regulators to TESCOM high pressure control regulators, Emerson is your choice for regulators, whether for overpressure protection or integrated solutions for your decarbonization goals.
We’re revolutionizing how enterprises use test systems and insights to drive product and business performance. Our proven test automation technology delivers leading accuracy, throughput, and reliability from the lab to the manufacturing floor and beyond. And with the industry’s most comprehensive software portfolio, modular hardware, systems, and services, our approach to test simplifies connecting systems and data across the business for quicker time to insights and safer, more reliable products, developed faster than ever.
The path to net zero starts with one valve at a time. Emerson offers control valves, isolation and shut-off valves, pressure and safety relief valves and solenoid valves, with a portfolio that includes Anderson Greenwood™, Bettis™, Crosby™, Clarkson™, Fisher™, KTM™, Keystone™, Vanessa™ and Yarway™. And with Emerson’s servicers, you’ll get decades of field- proven experience from a global leader.
Today’s manufacturers must respond to a growing demand for design innovation, miniaturization, and rapid product development by reducing costs and increasing throughput. Automation that enables innovation and sustainable operations is the key to success: with Branson™ plastic welding, metal welding, and precision cleaning technology from Emerson, OEMs across the globe can meet exacting standards in many industries, while our unequalled support network helps you stay nimble as new market challenges occur.
Choose the complexity of the model and scale it as necessary through the lifecycle of the plant.
Accordion Item with External Link
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Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
How can I better control my fired heater when I’m using different fuel sources?
In most facilities, alternative fuels are chosen because they’re cheaper, and that usually means variability of quality and energy value. Most fired heater combustion control systems use a volumetric flow or pressure to control combustion. Measuring heat content of the fuel is faster and more efficient. This can be solved by using Emerson’s Micro Motion Coriolis mass flow meters or a Rosemount Gas Chromatograph in the fuel supply. Pairing either measurement with precise flow controls, including Fisher control valves, allows for an optimized solution.
Should I monitor oxygen in my stack gas?
Measuring residual oxygen is critical to make sure there is the optimal amount of air as too much combustion air, reduces efficiency and too little makes the process unsafe.
What are the types of fired heaters used in the chemical industry?
In the chemical industry, various types of fired heaters are commonly used for heating applications. Pyrolysis furnaces are versatile heaters used in cracking applications such as ethylene production. Reforming furnaces are employed in catalytic reforming processes like those found in hydrogen production via steam methane reforming (SMR). Steam boilers produce high-pressure steam for power generation and heat exchange. Thermal fluid heaters use a heat transfer fluid for precise temperature control. Incinerators are used for waste disposal, while regenerative heaters recover and reuse waste heat. Direct fired heaters directly expose the process fluid to the flame. The choice of heater depends on process requirements, fuel availability, and environmental considerations.
What is thermal efficiency in a fired heater and how is it improved?
Thermal efficiency is the ratio of useful heat output to the total fuel energy input. It can be improved by several methods, such as pre-heating the combustion air, recovering waste heat, or optimizing burner performance.
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Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
Taking this action may invalidate your quote. Do you wish to proceed? Proceeding will convert your shopping cart into a standard order so that you can make changes.
com.coremedia.objectserver.web.HttpError[code=404, message=No placement found for name 'below']
Error rendering view The following has evaluated to null or missing:
==> lc.fragmentHighlightingMetaData [in template "jar:id:contentproperty:/Themes/emerson/templates/emerson-templates.jar/archive!/META-INF/resources/WEB-INF/templates/emerson/com.coremedia.objectserver.web/HttpError.unresolvablePlacement.ftl" at line 4, column 31]
----
Tip: It's the step after the last dot that caused this error, not those before it.
----
Tip: If the failing expression is known to legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----
----
FTL stack trace ("~" means nesting-related):
- Failed at: @preview.metadata data=[lc.fragmentHi... [in template "jar:id:contentproperty:/Themes/emerson/templates/emerson-templates.jar/archive!/META-INF/resources/WEB-INF/templates/emerson/com.coremedia.objectserver.web/HttpError.unresolvablePlacement.ftl" at line 4, column 6]
----
com.coremedia.objectserver.view.ViewException: Error rendering view
at com.coremedia.objectserver.view.ViewUtils.rethrow(ViewUtils.java:344)
at com.coremedia.objectserver.view.freemarker.FreemarkerViewEngine$FreemarkerView.render(FreemarkerViewEngine.java:154)
at com.coremedia.objectserver.view.freemarker.FreemarkerViewEngine$FreemarkerView.render(FreemarkerViewEngine.java:122)
at com.coremedia.objectserver.view.ExceptionHandlingViewDecorator$ExceptionDecorator.decorate(ExceptionHandlingViewDecorator.java:113)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingBaseView.render(ViewDecoratorBase.java:334)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingServletAndTextView.render(ViewDecoratorBase.java:422)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingBaseView.render(ViewDecoratorBase.java:336)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingServletAndTextView.render(ViewDecoratorBase.java:422)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingBaseView.render(ViewDecoratorBase.java:336)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingServletAndTextView.render(ViewDecoratorBase.java:422)
at com.coremedia.objectserver.view.ExceptionHandlingViewDecorator$ExceptionDecorator.decorate(ExceptionHandlingViewDecorator.java:113)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingBaseView.render(ViewDecoratorBase.java:334)
at com.coremedia.objectserver.view.ViewDecoratorBase$DecoratingServletAndTextView.render(ViewDecoratorBase.java:422)
at com.coremedia.objectserver.view.ViewUtils.render(ViewUtils.java:152)
at com.coremedia.objectserver.view.ViewUtils.render(ViewUtils.java:109)
at com.coremedia.objectserver.view.BeanView.renderMergedOutputModel(BeanView.java:63)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1401)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084)
at com.coremedia.objectserver.web.DispatcherServlet.doDispatch(DispatcherServlet.java:69)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.coremedia.livecontext.fragment.FragmentContextProvider.doFilter(FragmentContextProvider.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.coremedia.blueprint.cae.filter.PreviewViewFilter.doFilterInternal(PreviewViewFilter.java:48)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.springframework.web.filter.AbstractRequestLoggingFilter.doFilterInternal(AbstractRequestLoggingFilter.java:289)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.coremedia.blueprint.cae.filter.SiteFilter.doFilter(SiteFilter.java:54)
at com.emerson.globalization.web.filter.VirtualSiteFilter.doFilter(VirtualSiteFilter.java:40)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.coremedia.livecontext.preview.PreviewMarkerFilter.doFilter(PreviewMarkerFilter.java:35)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.coremedia.blueprint.livecontext.ecommerce.filter.CommerceConnectionFilter.doFilter(CommerceConnectionFilter.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.coremedia.blueprint.cae.filter.SiteFilter.doFilter(SiteFilter.java:54)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:327)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:122)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:116)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:126)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:81)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:109)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:149)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:103)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:89)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:117)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:110)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:55)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:211)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.emerson.blueprint.component.cae.csrf.CsrfLegacyTokenGetterFilter.doFilterInternal(CsrfLegacyTokenGetterFilter.java:19)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.coremedia.blueprint.cae.filter.RequestRejectedExceptionFilter.doFilter(RequestRejectedExceptionFilter.java:41)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:769)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1787)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: freemarker.core.InvalidReferenceException: The following has evaluated to null or missing:
==> lc.fragmentHighlightingMetaData [in template "jar:id:contentproperty:/Themes/emerson/templates/emerson-templates.jar/archive!/META-INF/resources/WEB-INF/templates/emerson/com.coremedia.objectserver.web/HttpError.unresolvablePlacement.ftl" at line 4, column 31]
----
Tip: It's the step after the last dot that caused this error, not those before it.
----
Tip: If the failing expression is known to legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----
----
FTL stack trace ("~" means nesting-related):
- Failed at: @preview.metadata data=[lc.fragmentHi... [in template "jar:id:contentproperty:/Themes/emerson/templates/emerson-templates.jar/archive!/META-INF/resources/WEB-INF/templates/emerson/com.coremedia.objectserver.web/HttpError.unresolvablePlacement.ftl" at line 4, column 6]
----
at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134)
at freemarker.core.UnexpectedTypeException.newDescriptionBuilder(UnexpectedTypeException.java:85)
at freemarker.core.UnexpectedTypeException.<init>(UnexpectedTypeException.java:63)
at freemarker.core.NonMethodException.<init>(NonMethodException.java:74)
at freemarker.core.MethodCall._eval(MethodCall.java:67)
at freemarker.core.Expression.eval(Expression.java:101)
at freemarker.core.DefaultToExpression._eval(DefaultToExpression.java:96)
at freemarker.core.Expression.eval(Expression.java:101)
at freemarker.core.ListLiteral._eval(ListLiteral.java:49)
at freemarker.core.Expression.eval(Expression.java:101)
at freemarker.core.Environment.setMacroContextLocalsFromArguments(Environment.java:1025)
at freemarker.core.Environment.invokeMacroOrFunctionCommonPart(Environment.java:871)
at freemarker.core.Environment.invokeMacro(Environment.java:825)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:84)
at freemarker.core.Environment.visit(Environment.java:347)
at freemarker.core.Environment.visit(Environment.java:353)
at freemarker.core.Environment.visit(Environment.java:353)
at freemarker.core.Environment.process(Environment.java:326)
at com.coremedia.objectserver.view.freemarker.FreemarkerViewEngine$FreemarkerView.render(FreemarkerViewEngine.java:150)
... 130 more
