EDIT

[euromed] 2019-07-30 16:07:08,780 INFO [qtp532445947-5019] [eu.etaxonomy.cdm.remote.controller.ClassificationPortalListController] - getPathFromTaxonToRank() /euromed/portal/classification/314a68f9-8449-495a-91c2-92fde8bcf344/pathFrom/1508b8e6-d184-454b-8d77-35719a1e0415
2019-07-30 16:07:08,794 WARN [qtp532445947-5019] [org.eclipse.jetty.servlet.ServletHandler] - 
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:981)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:860)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)


...

Caused by: java.lang.NullPointerException
        at eu.etaxonomy.cdm.api.service.ClassificationServiceImpl.loadTreeBranchToTaxon(ClassificationServiceImpl.java:323)
        at sun.reflect.GeneratedMethodAccessor8768.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
        at com.sun.proxy.$Proxy612.loadTreeBranchToTaxon(Unknown Source)
        at eu.etaxonomy.cdm.remote.controller.ClassificationPortalListController.getPathFromTaxonToRank(ClassificationPortalListController.java:202)
        at eu.etaxonomy.cdm.remote.controller.ClassificationPortalListController.getPathFromTaxon(ClassificationPortalListController.java:237)
        at sun.reflect.GeneratedMethodAccessor8767.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
        ... 61 more