Backup to Acronis can not be created in Plesk: Operation failed due to a temporary issue in the Cloud storage

Symptoms

Acronis Backup can not be created in Plesk. The process stops on 99% with the following error:

PLESK_ERROR: Operation failed due to a temporary issue in the Cloud storage.

PLESK_ERROR: [Archive Server]: storage request timeout

Cause

A temporary issue on the Acronis storage node.

Resolution

Already has been fixed on the Acronis side. 

Run a manual backup or wait for the next scheduled backup.