we are getting the below error on a straight forward flexi task workflow.
03/09/2017 13:05:19.12 w3wp.exe (0x1C34) 0x1E78 SharePoint Foundation Workflow Infrastructure 88xr Unexpected WinWF Internal Error, terminating workflow Id# 7dff798e-d389-4553-a7e8-2ad6bccff478
03/09/2017 13:05:19.12 w3wp.exe (0x1C34) 0x1E78 SharePoint Foundation Workflow Infrastructure 98d4 Unexpected System.ArgumentException: listItemKey at Microsoft.SharePoint.WorkflowActions.WaitForDocumentUnlockActivity.Initialize(WorkflowContext context, Guid listID, SPItemKey listItemKey) at Microsoft.SharePoint.WorkflowActions.WithKey.UpdateItemActivity.Execute(ActivityExecutionContext provider) at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(T activity, ActivityExecutionContext executionContext) at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(Activity activity, ActivityExecutionContext executionContext) at System.Workflow.ComponentModel.ActivityExecutorOperation.Run(IWorkflowCoreRuntime workflowCoreRuntime) at System.Workflow.Runtime.Scheduler.Run()
Can any one please help. Thanks in advance.
