Fatal error: Uncaught Error: Using $this when not in object context in /volume1/web/packages/system/panels/cms/040_backup/restore/actions.php on line 7

Error: Using $this when not in object context in /volume1/web/packages/system/panels/cms/040_backup/restore/actions.php on line 7

Call Stack:
    0.0012     373696   1. {main}() /volume1/web/packages/system/panels/cms/040_backup/restore/actions.php:0