UiPath Enterprise Studio Version: 2020.10.06
System Activities Version: 21.10.04
The error is kind of weird because when I reopen the code then the Error is getting disappear and I am able to run the workflow. But when I am trying to edit the code then same error is coming again and I am not able to run the workflow.
To run the workflow, I need to save the changes which I have made and then I am closing the UiPath. After reopening the same code it is working fine.
I have already gone through couple of forum post but no luck. I did playground with adding and removing namespaces. Also, I have tried upgrading and downgrading the system activities package.
FYI, we can get Studio installer in ResourceCenter in AutomationCloud if have Enterprise license.
And easily estimate URL of specific version installer.