An unexpected error occured!

Please see stacktrace below:

java.lang.IllegalStateException: Duplicate key TDX (attempted merging values Trat and Trat)
java.base/java.util.stream.Collectors.duplicateKeyException(Unknown Source)
java.base/java.util.stream.Collectors.lambda$uniqKeysMapAccumulator$1(Unknown Source)
java.base/java.util.stream.ReduceOps$3ReducingSink.accept(Unknown Source)
java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source)
java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)
de.airlinesim.map.PathParser.createAirportIndex(PathParser.java:97)
de.airlinesim.map.PathParser.createPaths(PathParser.java:76)
de.airlinesim.map.PathParser.parsePaths(PathParser.java:37)
de.airlinesim.operations.map.MapPathsOperation.execute(MapPathsOperation.java:23)
ch.rhj.business.filters.ExecutionFilter.filter(ExecutionFilter.java:48)
ch.rhj.business.BusinessFilter.filter(BusinessFilter.java:43)
de.airlinesim.PremiumOperationFilter.filter(PremiumOperationFilter.java:66)
ch.rhj.business.BusinessFilter.filter(BusinessFilter.java:43)
ch.rhj.business.filters.AuthorizationFilter.filter(AuthorizationFilter.java:65)
ch.rhj.business.BusinessFilter.filter(BusinessFilter.java:43)
de.airlinesim.MaintenanceModeFilter.filter(MaintenanceModeFilter.java:40)
de.airlinesim.operation.OperationRunnerService.executeReadOnly(OperationRunnerService.java:44)
de.airlinesim.operation.OperationRunnerService$$FastClassBySpringCGLIB$$9ac9cd4d.invoke()
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:792)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:762)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:762)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:707)
de.airlinesim.operation.OperationRunnerService$$EnhancerBySpringCGLIB$$1e8bde17.executeReadOnly()
de.airlinesim.OperationExecutor.execute(OperationExecutor.java:30)
de.airlinesim.web.actions.AirlineSimAction.reading(AirlineSimAction.java:147)
de.airlinesim.web.actions.map.MapPathsAction.createImage(MapPathsAction.java:28)
de.airlinesim.web.actions.ImageAction.execute(ImageAction.java:98)
java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
java.base/java.lang.reflect.Method.invoke(Unknown Source)
ognl.OgnlRuntime.invokeMethodInsideSandbox(OgnlRuntime.java:1245)
ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:1230)
ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1958)
ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)
com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:98)
com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:90)
ognl.OgnlRuntime.callMethod(OgnlRuntime.java:2034)
ognl.ASTMethod.getValueBody(ASTMethod.java:97)
ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
ognl.SimpleNode.getValue(SimpleNode.java:258)
ognl.Ognl.getValue(Ognl.java:586)
ognl.Ognl.getValue(Ognl.java:550)
com.opensymphony.xwork2.ognl.OgnlUtil.lambda$callMethod$4(OgnlUtil.java:599)
com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:642)
com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:599)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:434)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:307)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:259)
de.airlinesim.web.interceptors.ExceptionInterceptor.intercept(ExceptionInterceptor.java:46)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
de.airlinesim.web.interceptors.BusinessContextInterceptor.intercept(BusinessContextInterceptor.java:54)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:256)
de.airlinesim.web.interceptors.LanguageResourcesInterceptor.intercept(LanguageResourcesInterceptor.java:107)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
de.airlinesim.web.interceptors.NoCacheInterceptor.intercept(NoCacheInterceptor.java:72)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:179)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:99)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:49)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:99)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.FetchMetadataInterceptor.intercept(FetchMetadataInterceptor.java:78)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.CoopInterceptor.intercept(CoopInterceptor.java:57)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.CoepInterceptor.intercept(CoepInterceptor.java:55)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.doIntercept(ConversionErrorInterceptor.java:143)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:99)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:152)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:99)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:152)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:99)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:202)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:67)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:133)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:89)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:242)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:101)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:142)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:161)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:175)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:99)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.csp.CspInterceptor.intercept(CspInterceptor.java:59)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.httpmethod.HttpMethodInterceptor.intercept(HttpMethodInterceptor.java:99)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:154)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:229)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:196)
com.opensymphony.xwork2.DefaultActionInvocation.executeConditional(DefaultActionInvocation.java:299)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:253)
org.apache.struts2.factory.StrutsActionProxy.execute(StrutsActionProxy.java:48)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:651)
org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:79)
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.handleRequest(StrutsPrepareAndExecuteFilter.java:157)
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.tryHandleRequest(StrutsPrepareAndExecuteFilter.java:140)
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:128)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.web.IPLoggingFilter.doFilter(IPLoggingFilter.java:30)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.web.UsersOnlineFilter.doFilter(UsersOnlineFilter.java:27)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.context.UserContextFilter.doFilter(UserContextFilter.java:37)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.auth.user.UserFilter.doFilter(UserFilter.java:31)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
org.springframework.orm.hibernate5.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:156)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.web.InstallModeFilter.doFilter(InstallModeFilter.java:48)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.auth.CookieAuthenticationFilter.doFilter(CookieAuthenticationFilter.java:55)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.web.ErrorHandlingFilter.doFilter(ErrorHandlingFilter.java:28)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
de.airlinesim.web.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:56)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
org.springframework.web.filter.ForwardedHeaderFilter.doFilterInternal(ForwardedHeaderFilter.java:156)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:210)
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527)
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:598)
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1580)
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1384)
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484)
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1553)
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1306)
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:822)
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
org.eclipse.jetty.server.Server.handle(Server.java:563)
org.eclipse.jetty.server.HttpChannel$RequestDispatchable.dispatch(HttpChannel.java:1598)
org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:753)
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:501)
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:287)
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)
org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:421)
org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:390)
org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:277)
org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:199)
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411)
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)
java.base/java.lang.Thread.run(Unknown Source)