com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class org.springframework.validation.DefaultMessageCodesResolver and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: org.openmrs.module.webservices.validation.ValidationException["errors"]->org.springframework.validation.BindException["bindingResult"]->org.springframework.validation.BeanPropertyBindingResult["messageCodesResolver"])
	com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:77)
	com.fasterxml.jackson.databind.SerializerProvider.reportBadDefinition(SerializerProvider.java:1277)
	com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400)
	com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.failForEmpty(UnknownSerializer.java:71)
	com.fasterxml.jackson.databind.ser.impl.UnknownSerializer.serialize(UnknownSerializer.java:33)
	com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
	com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
	com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
	com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
	com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
	com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
	com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728)
	com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:755)
	com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:178)
	com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
	com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
	com.fasterxml.jackson.databind.ObjectWriter$Prefetch.serialize(ObjectWriter.java:1516)
	com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:1006)
	org.springframework.web.servlet.view.json.AbstractJackson2View.writeContent(AbstractJackson2View.java:228)
	org.springframework.web.servlet.view.json.AbstractJackson2View.renderMergedOutputModel(AbstractJackson2View.java:172)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1373)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1118)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1057)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	org.openmrs.module.web.filter.ForcePasswordChangeFilter.doFilter(ForcePasswordChangeFilter.java:60)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:73)
	org.openmrs.web.filter.GZIPFilter.doFilterInternal(GZIPFilter.java:65)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:71)
	org.openmrs.module.webservices.rest.web.filter.AuthorizationFilter.doFilter(AuthorizationFilter.java:105)
	org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:71)
	org.openmrs.module.webservices.rest.web.filter.ContentTypeFilter.doFilter(ContentTypeFilter.java:64)
	org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:71)
	org.springframework.web.filter.ShallowEtagHeaderFilter.doFilterInternal(ShallowEtagHeaderFilter.java:106)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:71)
	org.openmrs.module.owa.filter.OwaFilter.doFilter(OwaFilter.java:93)
	org.openmrs.module.owa.filter.OwaFilter.doFilter(OwaFilter.java:61)
	org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:71)
	org.openmrs.module.web.filter.ModuleFilter.doFilter(ModuleFilter.java:57)
	org.openmrs.web.filter.OpenmrsFilter.doFilterInternal(OpenmrsFilter.java:105)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	org.springframework.orm.hibernate5.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:156)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:108)
	org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:108)
	org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:108)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
Note The full stack trace of the root cause is available in the server logs.

Apache Tomcat/7.0.94