After successful system login, the following error occurred. No instances of multiple usage were found. Please help me solve this problem. Thank you very much!
java.lang.IllegalArgumentException: class com.example.application.base.ui.MainLayout is used in multiple locations
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.checkForDuplicates(AbstractNavigationStateRenderer.java:1092) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.router.internal.AbstractNavigationStateRenderer.handle(AbstractNavigationStateRenderer.java:171) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.component.internal.JavaScriptNavigationStateRenderer.handle(JavaScriptNavigationStateRenderer.java:78) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.router.Router.executeNavigation(Router.java:399) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.component.UI.handleNavigation(UI.java:2038) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.component.UI.renderViewForRoute(UI.java:1999) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.component.UI.browserNavigate(UI.java:1884) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.component.ComponentEventBus.fireEventForListener(ComponentEventBus.java:242) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.component.ComponentEventBus.handleDomEvent(ComponentEventBus.java:491) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.component.ComponentEventBus.lambda$addDomTrigger$dd1b7957$1(ComponentEventBus.java:301) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.internal.nodefeature.ElementListenerMap.lambda$fireEvent$2(ElementListenerMap.java:501) ~[flow-server-25.0.5.jar:25.0.5]
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596) ~[na:na]
at com.vaadin.flow.internal.nodefeature.ElementListenerMap.fireEvent(ElementListenerMap.java:501) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.communication.rpc.EventRpcHandler.handleNode(EventRpcHandler.java:62) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.communication.rpc.AbstractRpcInvocationHandler.handle(AbstractRpcInvocationHandler.java:80) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocationData(ServerRpcHandler.java:571) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.communication.ServerRpcHandler.lambda$handleInvocations$6(ServerRpcHandler.java:552) ~[flow-server-25.0.5.jar:25.0.5]
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596) ~[na:na]
at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:552) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:376) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:135) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:63) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1839) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:402) ~[flow-server-25.0.5.jar:25.0.5]
at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:106) ~[vaadin-spring-25.0.5.jar:na]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:710) ~[tomcat-embed-core-11.0.15.jar:6.1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:128) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:513) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:333) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:262) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:139) ~[spring-webmvc-7.0.2.jar:7.0.2]
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177) ~[spring-webmvc-7.0.2.jar:7.0.2]
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:49) ~[spring-webmvc-7.0.2.jar:7.0.2]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-7.0.2.jar:7.0.2]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:866) ~[spring-webmvc-7.0.2.jar:7.0.2]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1003) ~[spring-webmvc-7.0.2.jar:7.0.2]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:903) ~[spring-webmvc-7.0.2.jar:7.0.2]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:649) ~[tomcat-embed-core-11.0.15.jar:6.1]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:874) ~[spring-webmvc-7.0.2.jar:7.0.2]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:710) ~[tomcat-embed-core-11.0.15.jar:6.1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:128) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-11.0.15.jar:11.0.15]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:235) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:371) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:101) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:181) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:245) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:239) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:96) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:118) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.context.SecurityContextHolderFilter.doFilter(SecurityContextHolderFilter.java:82) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.context.SecurityContextHolderFilter.doFilter(SecurityContextHolderFilter.java:69) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:62) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:237) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:195) ~[spring-security-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.ServletRequestPathFilter.doFilter(ServletRequestPathFilter.java:52) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:74) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$CompositeFilterChainProxy.doFilter(WebSecurityConfiguration.java:317) ~[spring-security-config-7.0.2.jar:7.0.2]
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:355) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:272) ~[spring-web-7.0.2.jar:7.0.2]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-7.0.2.jar:7.0.2]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-7.0.2.jar:7.0.2]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:199) ~[spring-web-7.0.2.jar:7.0.2]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-7.0.2.jar:7.0.2]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:107) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:165) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:77) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:41002) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:113) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:83) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:72) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:397) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:903) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1778) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:946) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:480) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:57) ~[tomcat-embed-core-11.0.15.jar:11.0.15]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[na:na]