Hi,
I am trying to migrate from log4j1.x to log4j2.17.2 using log4j1.x bridge approach. I am getting below ClassCastException error message. Please let me know if you have any idea how to fix this. 2022-03-08 01:41:17,023 http-nio-8088-exec-9 ERROR Unable to create Lookup for bundle java.lang.ClassCastException: class org.apache.logging.log4j.core.lookup.ResourceBundleLookup at java.lang.Class.asSubclass(Class.java:3404) at org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:79) at org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:100) at org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(AbstractConfiguration.java:133) at org.apache.log4j.config.Log4j1Configuration.<init>(Log4j1Configuration.java:43) at org.apache.log4j.config.PropertiesConfiguration.<init>(PropertiesConfiguration.java:99) at org.apache.log4j.config.PropertiesConfiguration.<init>(PropertiesConfiguration.java:110) at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:300) at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:276) at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:388) at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:183) at com.Custom.tools.logging.CustomLogger.resetURL(CustomLogger.java:408) at com.Custom..impl.JavaLogPropertyHelper.updateJavaLogPropertiesFromList(JavaLogPropertyHelper.java:226) at com.Custom..impl.CustomServiceConfigurationImpl.SetHostProperties(CustomServiceConfigurationImpl.java:293) at com.Custom.Comm.CommToICustomServiceConfiguration.setHostProperties(CommToICustomServiceConfiguration.java:642) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.sun.xml.ws.util.Trampoline.invoke(MethodUtil.java:52) at sun.reflect.GeneratedMethodAccessor142.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.sun.xml.ws.util.MethodUtil.invoke(MethodUtil.java:77) at com.sun.xml.ws.api.server.MethodUtil.invoke(MethodUtil.java:34) at com.sun.xml.ws.api.server.InstanceResolver$1.invoke(InstanceResolver.java:220) at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:119) at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:58) at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:1106) at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:1020) at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:989) at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:847) at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:389) at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:838) at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:392) at com.sun.xml.ws.transport.http.servlet.ServletAdapter.invokeAsync(ServletAdapter.java:195) at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(WSServletDelegate.java:131) at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:167) at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(WSServlet.java:51) at javax.servlet.http.HttpServlet.service(HttpServlet.java:681) 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 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 org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:126) at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:64) at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:101) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:359) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:889) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1735) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)