Issue with deleting website backup
When i delete backup in Sites/$sitename/Backup, files are physicaly deleted but ICPconfig looks for some time like files are still here. It generates following error: 06.03.2018-16:35 - WARNING - Falsche Anfrage / Wrong QuerySQL-Query = DELETE FROM web_backup WHERE server_id = ? AND parent_domain_id = ? AND filename = ? -> 1064 (You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '? AND parent_domain_id = ? AND filename = ?' at line 1)
ISPconfig fixes it somehow during night.
When i delete backup in ISPconfig, web interface should display proper informations without generating those errors.
Server OS: (Debian)
Server OS version: (Jessie) ISPConfig version: (3.1.11)
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