Ugly stacktrace when trying to upload a non-image file as a complex obs with the ImageHandler

I created a concept with datatype=complex, and chose the ImageHandler. Then I went to edit an existing encounter, and tried to add an obs of that concept, but I uploaded a non-image file. (It was a .patch file IIRC). And I got an ugly stack trace.

Cannot save complex obs where obsId=null because its ComplexData.getData() is null.

An Internal Error has Occurred
org.hibernate.LazyInitializationException
failed to lazily initialize a collection of role: org.openmrs.Concept.names, no session or session was closed

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org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
org.hibernate.collection.PersistentSet.iterator(PersistentSet.java:163)
org.openmrs.Concept.getNames(Concept.java:1062)
org.openmrs.Concept.getNames(Concept.java:1046)
org.openmrs.Concept.getName(Concept.java:649)
org.openmrs.Concept.getName(Concept.java:537)
org.openmrs.web.controller.observation.ObsFormController.referenceData(ObsFormController.java:248)
org.springframework.web.servlet.mvc.AbstractFormController.showForm(AbstractFormController.java:578)
org.springframework.web.servlet.mvc.SimpleFormController.showForm(SimpleFormController.java:201)
org.springframework.web.servlet.mvc.SimpleFormController.showForm(SimpleFormController.java:178)
org.openmrs.web.controller.observation.ObsFormController.onSubmit(ObsFormController.java:181)
org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272)
org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268)
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.openmrs.module.web.filter.ForcePasswordChangeFilter.doFilter(ForcePasswordChangeFilter.java:65)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:76)
org.openmrs.module.xforms.web.XformsFilter.doFilter(XformsFilter.java:60)
org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:74)
org.openmrs.module.web.filter.ModuleFilter.doFilter(ModuleFilter.java:58)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.openmrs.web.filter.OpenmrsFilter.doFilterInternal(OpenmrsFilter.java:112)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:83)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:83)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:83)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
java.lang.Thread.run(Thread.java:662)

OpenMRS Version: 1.8.2 Build 23236