Hello @Waseem Sayyad
Thanks for reaching out to us, this error means that you have not set up the resource well or the connection as below screenshot.
Set up the form recognizer resource:
Set up the connection:
The whole reference document is here: https://learn.microsoft.com/en-us/azure/applied-ai-services/form-recognizer/quickstarts/try-sample-label-tool
Hope this helps, please let me know if you have issue in any of the part.
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.