付款单提交报错，看不懂报错，帮忙分析下啥问题，谢谢

ctrl + e详细报错如下：

错误信息：null
Caused exception message is: null
错误详细堆栈信息：Caused by: com.kingdee.bos.workflow.WfException :
null
Caused exception message is: null
java.lang.NullPointerException
at com.kingdee.bos.workflow.enactment.WfEngine.findMatchedBizProcInfo(WfEngine.java:1330)
at com.kingdee.bos.workflow.service.WfDefineService.findProcDef(WfDefineService.java:806)
at com.kingdee.bos.workflow.service.WfDefineService.findSubmitProcDef(WfDefineService.java:546)
at com.kingdee.bos.workflow.service.WfBizService.checkPostActivitiesPersonsResult(WfBizService.java:2076)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:94)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:619)
at com.kingdee.bos.workflow.util.InvocationExecutor.execute(InvocationExecutor.java:28)
at com.kingdee.bos.workflow.transaction.WfTxInvoker.invoke(WfTxInvoker.java:33)
at sun.reflect.GeneratedMethodAccessor2887.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:619)
at com.kingdee.bos.workflow.metas.InvokeMethodDelegateControllerBean.invoke(InvokeMethodDelegateControllerBean.java:77)
at com.kingdee.bos.workflow.metas.InvokeMethodDelegateControllerBean._invokeSupports(InvokeMethodDelegateControllerBean.java:38)
at com.kingdee.bos.workflow.metas.AbstractInvokeMethodDelegateControllerBean.invokeSupports(AbstractInvokeMethodDelegateControllerBean.java:64)
at sun.reflect.GeneratedMethodAccessor321.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:619)
at com.kingdee.bos.transaction.EJBTxFacade.TxInvokerBean.invoke(TxInvokerBean.java:125)
at com.kingdee.bos.transaction.EJBTxFacade.TxInvokerBean.INVOKE_SUPPORTS(TxInvokerBean.java:64)
at com.kingdee.bos.transaction.EJBTxFacade.TxInvokerBean_LocalObjectImpl_2.INVOKE_SUPPORTS(Unknown Source)
at com.kingdee.bos.transaction.EJBTransactionProxy.invoke(EJBTransactionProxy.java:179)
at com.kingdee.bos.transaction.EJBTransactionProxy.invoke(EJBTransactionProxy.java:324)
at com.sun.proxy.$Proxy90.invokeSupports(Unknown Source)
at com.kingdee.bos.workflow.metas.InvokeMethodDelegate.invokeSupports(InvokeMethodDelegate.java:79)
at sun.reflect.GeneratedMethodAccessor320.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:619)
at com.kingdee.bos.ResponseInvocationHandler.invoke(ResponseInvocationHandler.java:194)
at com.sun.proxy.$Proxy89.invokeSupports(Unknown Source)
at com.kingdee.bos.workflow.transaction.WfTxHelper.invokeSupports(WfTxHelper.java:59)
at com.kingdee.bos.workflow.service.ormrpc.EnactmentService.checkPostActivitiesPersonsResult(EnactmentService.java:4096)
at rpc_generate._PROXY_com_1_kingdee_1_bos_1_workflow_1_service_1_ormrpc_1_IEnactmentService.pi238(Unknown Source)
at rpc_generate._PROXY_com_1_kingdee_1_bos_1_workflow_1_service_1_ormrpc_1_IEnactmentService.processInvoke(Unknown Source)
at com.kingdee.bos.rpc.impl.ObjectProxy.processInvoke(ObjectProxy.java:177)
at com.kingdee.bos.rpc.impl.RPCService.serviceCreateObjectAndInvoke(RPCService.java:611)
at com.kingdee.bos.rpc.impl.RPCService.service(RPCService.java:122)
at com.kingdee.bos.rpc.impl.ServiceDispatcher.run(ServiceDispatcher.java:153)
at com.kingdee.bos.rpc.impl.ThreadJob.run(ThreadJob.java:27)
at com.kingdee.bos.rpc.impl.ThreadPool2$Worker.run(ThreadPool2.java:140)