UPDATE 2019-02-25 9:00 AM UTC
A fix has beed deployed and the problem now longer occurs. We suppose, that around 50 jobs suffered from this issue.
We do sincerely apologize for the trouble this may have caused to you. Don't hesitate to contact our support for help.
2019-02-24 10:00 PM UTC
We're experiencing issues with new OAuth Broker API.
In some cases it might not return the authorised credentials for a component's job. Re-running the job might be successful.
The fix will be deployed very soon.
If you haven't migrated to the new version, please wait until the fix is deployed.
We're terribly sorry for any inconvenience.