I am having the same error and none of our pbix files are publishing on any account at the moment, we either receive this error box or if its a new refresh of an existig report we get a "was published but unable to refresh the dataset, try refreshing the datatset form inside the service".
Seems there is a critical error on the servers at the moment?
I am also experiencing the same issue and I am getting exactly the same error message. I am trying to publish a brand new report and it wont let me. I looked to see if it was a known issue but could find anything and then stumbled across this post. Have both of you installed the new update as I havent and im still experiencing issues.