If an error occurs while we are editing the website, and we can't finish it, the quickest option to restore it to normal is to restore the website's backup data before we made the edits/errors.

1. Log in to your Plesk Control Panel (for the first time a pop up cookies will appear at the top, click Accept all cookies.);
2. Click the domain that you want to restore the backup file to;
3. Click Backup & Restore;
4. Make sure there is a backup file view. Then click the backup file (click on the date of the backup);
5. What do you want to restore? Just select All objects (entire system) or it's up to you;
6. Make sure Components to restore is all checked;
7. When the restoration is completed, send a notification to can be checked or not;
8. Click Restore, and wait until the process is complete;
9. Done.