Getting error on running the Robot saying 'Value cannot be null. Parameter name:Value'

Help
1

Getting Popup message saying ‘Value cannot be null. Parameter name:Value’ on running my Robot. Not sure if I am missing anything.

2

Hi @sanket.thatte,

The value you’re printing is empty. Or Your variable or argument is not passed correctly. Can you check the source of the error message to identify which activity.

Regards,
PD

3

Can you share your workflow file or more information about the error? This seems to be a variable or an argument, most likely missing argument

4

are you able to trace your activity where the error popes up

5

Hi, click the import arguments on the your invoke workflow and pass the variable.

6

Hi, I encounter the same problem.
I have no idea how to trace the root cause since the error message only shown when I run via the Robot. It doesn’t show if I run from the Studio.

Anyone have idea how to trace the root cause?
Thanks.

1 Like
7

Hi,
I’m having the same problem/error.
If I try to call the process through UiRobot, the same error appears, and with a simple test workflow.
I’ll share the workflow:
image
image

8

Hi All,

I’m able to solve this problem by killing the UiPath Robot from the task manager.
Hope it helps.

9

Was this ever resolved? Im having the same issue and Im wondering if its a permission issue. I have a simple workflow that has no parameters and Im running the bot using AD so dont think I need to pass a password

10

Ok so from Orchestrator back to your local environment you have to provide credentials.

11

I have a similar problem. “Value cannot be null -Parameter name: String”
Can someone help me please.
I attached the log and the xaml here.

Estou com problema semelhante. “Valor não pode ser nulo -Parâmetro nome: String”
Alguém pode me ajudar por favor.
Coloquei anexo aqui do log e do xaml.Select_Acsel_Copy.xaml (28.3 KB)

12

I am having this exact problem. But not when the Robot runs. I get it when I’m trying to place any activity into any part of a “Try Catch” Activity. It just says “value cannot be null (Parameter ‘value’)” - I don’t know what to change. Every YouTube video shows it working no problem for each Tutor demonstrating how “Try Catch” works.