Getting Refresh Token Expired Error in Power BI Service

Hello folks,

I am trying to execute a Power BI report which keeps on throwing the error:

When I go to dataset settings page I can see the warning icon below (Cherwell is one of the Rest API name that this report is using as a data source):

When I click on 'Edit Credentials'  and 'Sign in'

Error goes away and the report works absolutely fine.

So the problem is with the Rest API I have to verify the credentials again and again in sometime  otherwise the report keeps on throwing error above.

Could someone pls advise how to resolve this issue permanently?

Thanks