This error occurs when the token expires. To fix this, you just need to delete your account and add it again and that will solve this issue.
To do this, go to your account in GigRadar CRM and:
go to Setttings on the left sidebar
Choose Upwork Connected Account
Choose the freelancer account that you need to delete
Click "Remove"
After that, you can reconnect your account once again by clicking on "Authorize Account."
