自助仪表盘报空指针错误什么原因？ 具体报错信息：smartbix.SmartbiXException: 空指针异常 -> null at smartbix.SmartbiXException.create(SmartbiXException.java:58) at smartbix.ExceptionResult.<init>(ExceptionResult.java:32) at smartbix.spring.SmartbiXExceptionHandler.handleInvalidRequest(SmartbiXExceptionHandler.java:49) at sun.reflect.GeneratedMethodAccessor2210.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at smartbixlibs.org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) at smartbixlibs.org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) at smartbixlibs.org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) at smartbixlibs.org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.doResolveHandlerMethodException(ExceptionHandlerExceptionResolver.java:385) at smartbixlibs.org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:59) at smartbixlibs.org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:131) at smartbixlibs.org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1222) at smartbixlibs.org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1034) at smartbixlibs.org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:984) at smartbixlibs.org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) at smartbixlibs.org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) at smartbixlibs.org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) at smartbixlibs.org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at smartbi.extension.Extension.processMatchServlet(Extension.java:473) at smartbi.extension.ExtensionFilter.processInternal(ExtensionFilter.java:212) at smartbi.extension.ExtensionFilter.access$000(ExtensionFilter.java:44) at smartbi.extension.ExtensionFilter$2.doFilter(ExtensionFilter.java:162) at smartbi.extension.ExtensionFilter$1.doFilter(ExtensionFilter.java:152) at smartbix.smartbi.filter.SmartbiXTraceFilter.doFilter(SmartbiXTraceFilter.java:46) at smartbi.extension.ExtensionFilter$1.doFilter(ExtensionFilter.java:152) at smartbixlibs.org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at smartbixlibs.org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at smartbi.extension.ExtensionFilter$1.doFilter(ExtensionFilter.java:152) at smartbi.security.patch.PatchFilter.doFilter(PatchFilter.java:70) at smartbi.extension.ExtensionFilter$1.doFilter(ExtensionFilter.java:152) at smartbi.extension.ExtensionFilter.doFilterInternal(ExtensionFilter.java:175) at smartbi.extension.ExtensionFilter.doFilter(ExtensionFilter.java:64) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:615) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1627) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)Caused by: java.lang.NullPointerException
