Failed to publish app. The following groups have failed validation

We have roughly 25 workspaces that I manage alone. I have very large audiences that use distribution groups to help me manage access and some audiences with named individual users. I get this error pretty often below when updating an app. I can't find the user in AAD because they have been inactivated and therefore I don't know who to look for. I think it'd be better that Power BI automatically (or allow you) to remove the user in the prompt or tell you more about the user that is not being validated.

Failed to publish app.

The following groups have failed validation: exampleUser(at)email.com