Microsoft Graph API credentials not valid in online workspace

Hello!

I have a simple question:

For a dashboard I have used the graph API to connect to microsoft planner data. In de the desktop application this worked fine, but after publishing I am unable to set up a refresh, because it gives an error stating that the credentials are invalid. See screenshots below. 

I have found multiple people with this issue,

https://stackoverflow.com/questions/75626446/failed-to-update-data-source-credentials-the-credentials-provided-for-the-odata

https://www.pbiusergroup.com/communities/community-home/digestviewer/viewthread?MessageKey=7cce3290-2cd3-40a2-a6f9-7f3377524ac6&CommunityKey=b35c8468-2fd8-4e1a-8429-322c39fe7110&tab=digestviewer

But sadly could not find a solution so far.

Does anyone know how to fix this?

Sincerely,

Erik