I just took a copy of my current report and pushed it. Failed with no error message provided.
Removed my Kusto data sources. This worked on a manual. Will setup a scheduled refresh.
But if this is the case, odd that this just now fails when it has been working for months without changes.
Okay, after refreshing my credentials to Kusto for a 5th time, I guess they finally stuck.
This should have happend after the first time, so guessing there is a small PowerBI Server bug here.