在定时任务中调用写的插件，给单据头和单据体赋值完后，调用单据的保存操作，报NULL错误，求助各位大佬！

上传图片

下面是报错的全内容：

后台事务异常,AppName: kdcosmic-xjw-8881,InstanceId: kdcosmic-xjw-8881-3624237319,taskId: 1924580855775242240 ,errorInfo: kd.bos.exception.KDException: null

at kd.bos.service.operation.OperationServiceImpl.localInvokeOperation(OperationServiceImpl.java:183)

at kd.bos.service.operation.OperationServiceImpl.invokeOperation(OperationServiceImpl.java:66)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at kd.bos.service.DispatchServiceImpl.invoke(DispatchServiceImpl.java:47)

at sun.reflect.GeneratedMethodAccessor178.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at kd.bos.mservice.rpc.dubbo.debug.LocalDebugProxy$1.lambda$invoke$0(LocalDebugProxy.java:61)

at kd.bos.mservice.rpc.dubbo.debug.DubboDebugUtil.invoke(DubboDebugUtil.java:46)

at kd.bos.mservice.rpc.dubbo.debug.LocalDebugProxy$1.invoke(LocalDebugProxy.java:58)

at com.sun.proxy.$Proxy70.invoke(Unknown Source)

at kd.bos.servicehelper.DispatchServiceHelper.invokeBOSService(DispatchServiceHelper.java:103)

at kd.bos.servicehelper.operation.OperationServiceHelper.executeOperate(OperationServiceHelper.java:57)

at dc.scmc.task.SaleOutCxTask.execute(SaleOutCxTask.java:167)

at kd.bos.schedule.executor.BizJobHandler.execute(BizJobHandler.java:56)

at kd.bos.schedule.api.AbstractJobHandler.handle(AbstractJobHandler.java:25)

at kd.bos.schedule.message.JobProcessor.executeTask(JobProcessor.java:415)

at kd.bos.schedule.message.JobProcessor.process(JobProcessor.java:243)

at kd.bos.schedule.message.JobProcessor.run(JobProcessor.java:565)

at kd.bos.threads.impl.ThreadPoolImpl.lambda$execute$0(ThreadPoolImpl.java:57)

at kd.bos.threads.impl.RequestContextRunnable.run(RequestContextRunnable.java:59)

at kd.bos.thread.ThreadLifeCycleManager$RunnableWrap.run(ThreadLifeCycleManager.java:267)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

Caused by: java.lang.UnsupportedOperationException

at java.sql.Date.toInstant(Date.java:304)

at kd.scmc.im.helper.DaysCalcHelper.differentDays(DaysCalcHelper.java:20)

at kd.scmc.im.validator.tpl.BillBizDateValidator.validate(BillBizDateValidator.java:86)

at kd.bos.service.operation.validate.ValidationService.doVaidate(ValidationService.java:301)

at kd.bos.service.operation.validate.ValidationService.validate(ValidationService.java:238)

at kd.bos.service.operation.validate.ValidationService.validate(ValidationService.java:194)

at kd.bos.service.operation.EntityOperateService.tryValidate(EntityOperateService.java:1397)

at kd.bos.service.operation.EntityOperateService.validate(EntityOperateService.java:851)

at kd.bos.service.operation.EntityOperateService.validate(EntityOperateService.java:798)

at kd.bos.service.operation.EntityOperateService.doExcete(EntityOperateService.java:674)

at kd.bos.service.operation.EntityOperateService.excute(EntityOperateService.java:398)

at kd.bos.service.operation.OperationServiceImpl.localInvokeOperation(OperationServiceImpl.java:161)

... 27 more

产品问题调用保存操作报错，报null错误

50 产品问题 调用保存操作报错，报null错误

恭喜您！

产品问题
调用保存操作报错，报null错误

50 产品问题调用保存操作报错，报null错误