Hi,
When I try to execute the “System1_CreateYearlyReport” work flow, I am getting the below error. I initialized all the 3 In Arguments and even tried only with In arguments. I tried copy & pasted all the work flows in a new folder. But there is no success so far. I searched all the relevant posting before raising this question. Please assist here…
System.ArgumentNullException: Value cannot be null.
Parameter name: expression
at System.Activities.InArgument1.FromExpression(Activity
1 expression)
at System.Activities.InArgument1.op_Implicit(Activity
1 expression)
at UiPath.Core.Activities.OnWaitActivity.<>c__DisplayClass17_0.<.ctor>b__0()
at System.Activities.Activity.OnInternalCacheMetadata(Boolean createEmptyBindings)
at System.Activities.Activity.InternalCacheMetadata(Boolean createEmptyBindings, IList1& validationErrors) at System.Activities.ActivityUtilities.ProcessActivity(ChildActivity childActivity, ChildActivity& nextActivity, Stack
1& activitiesRemaining, ActivityCallStack parentChain, IList1& validationErrors, ProcessActivityTreeOptions options, ProcessActivityCallback callback) at System.Activities.ActivityUtilities.ProcessActivityTreeCore(ChildActivity currentActivity, ActivityCallStack parentChain, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList
1& validationErrors)
at System.Activities.ActivityUtilities.CacheRootMetadata(Activity activity, LocationReferenceEnvironment hostEnvironment, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList`1& validationErrors)
at System.Activities.Validation.ActivityValidationServices.InternalActivityValidationServices.InternalValidate()
at System.Activities.Validation.ActivityValidationServices.Validate(Activity toValidate, ValidationSettings settings)
at System.Activities.Presentation.Validation.ValidationService.CoreValidationWork(ValidationReason reason, CancellationToken cancellationToken)