HTTP Status 500 – Internal Server Error

Type Exception Report

Message Request processing failed; nested exception is java.lang.IllegalStateException: The Controller is being used recursively or concurrently. This is not permitted.

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: The Controller is being used recursively or concurrently. This is not permitted.
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:963)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:842)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:670)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:827)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:779)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

java.lang.IllegalStateException: The Controller is being used recursively or concurrently. This is not permitted.
	net.sf.saxon.Controller.checkReadiness(Controller.java:1854)
	net.sf.saxon.Controller.transform(Controller.java:1884)
	net.sf.saxon.s9api.XsltTransformer.transform(XsltTransformer.java:596)
	net.sf.saxon.jaxp.TransformerImpl.transform(TransformerImpl.java:73)
	com.lyncode.xoai.util.XSLPipeline.apply(XSLPipeline.java:25)
	com.lyncode.xoai.dataprovider.handlers.GetRecordHandler.handle(GetRecordHandler.java:64)
	com.lyncode.xoai.dataprovider.OAIDataProvider.handle(OAIDataProvider.java:207)
	org.dspace.xoai.controller.DSpaceOAIDataProvider.contextAction(DSpaceOAIDataProvider.java:104)
	sun.reflect.GeneratedMethodAccessor503.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:498)
	org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
	org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
	org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:743)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:672)
	org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:82)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:933)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:867)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:951)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:842)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:670)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:827)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:779)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Note The full stack trace of the root cause is available in the server logs.

Apache Tomcat/9.0.69