Check Activity Error

Help Studio
1

After updating UiPath to the latest version 2022.12 (Dec) Beta

I gotten this error when using the “Check” Activity checkbox.

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image1808×869 98.5 KB

Please assist

I unable to rollback to previous UiPath version.

2

Hi @DevTester

Have you indicated your target element in the activity? Looks like the target is empty in the activity

3

Yes i did too, it shows the same error

I used this activity tons of times, until the update finished, it shows error

4

What does the error says?.

5

The error might be updating it to 2022 (dec) beta version of UiPath, previously i used this activity its ok.

6

[Error] Main.xaml: Internal constraint exception while running constraint with name ‘Constraint’ against activity of type System.Activities.Statements.Sequence with name ‘Sequence’. Exception was: System.NullReferenceException: Object reference not set to an instance of an object.
at System.Activities.WorkflowApplication.Invoke(Activity activity, IDictionary2 inputs, WorkflowInstanceExtensionManager extensions, TimeSpan timeout) at System.Activities.WorkflowInvoker.Invoke(Activity workflow, IDictionary2 inputs)
at System.Activities.Validation.ActivityValidationServices.RunConstraints(ChildActivity childActivity, ActivityCallStack parentChain, IList1 constraints, ProcessActivityTreeOptions options, Boolean suppressGetChildrenViolations, IList1& validationErrors)
01/05/2023 10:57:53 => [Error] Main.xaml: Internal constraint exception while running constraint with name ‘Constraint’ against activity of type System.Activities.Statements.Sequence with name ‘Sequence’. Exception was: System.NullReferenceException: Object reference not set to an instance of an object.
at System.Activities.WorkflowApplication.Invoke(Activity activity, IDictionary2 inputs, WorkflowInstanceExtensionManager extensions, TimeSpan timeout) at System.Activities.WorkflowInvoker.Invoke(Activity workflow, IDictionary2 inputs)
at System.Activities.Validation.ActivityValidationServices.RunConstraints(ChildActivity childActivity, ActivityCallStack parentChain, IList1 constraints, ProcessActivityTreeOptions options, Boolean suppressGetChildrenViolations, IList1& validationErrors)

7

The error says like the target is empty. Could you please delete the activity and add it again?
and Update uiautomation package as well.

8

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image1374×647 56.3 KB

This activity I have been used tons of times previously it worked, but after updating it to 2022 (beta) version it does not work and give me the error above.

9

@DevTester
Did you update UI automation package in the project?

10

yes i updated to the latest version

11

@DevTester

Have you tried using modern activities
Cheers

12

Hello, I also hit this issue. I got a old script using legacy window mode, It works before convert. But after I converted. the “Check” activity made my script error. After that, I create a new project with one “Check” activity alone. The error still hit. Do anyone know how can I downgrade to previous version?

13

Found solution, just use the check/uncheck activity on the modern one.

The old check activity has been broken in the 2022 (Dec) beta update.

Hope the dev of UiPath can do sth about it.

2 Likes
14

Hi @Anil_G I’m also facing also same error, but my problem is i have used around 40 times check activity.so how can i do these modern activity chance at all 40 place at once?

15

@pravin_bindage

I dont think you can replace all 40 at once…by if that check is for same element then you can create an pbject in object repo and proceed

Cheers

1 Like
16

No that all are used for different boxes.Then now that Classic check activity is not use ?