500 error after try of restore backup

Hi guys, I have a problem with my website (www.torquear.com/index)

Today I tried to restore a backup of my website with XCloner. When I started to restore it gave me an error (I don’t remember what error) and my website went down. My website is down and I can’t enter to my dashboard. I was trying a lot of solutions (Desactivate plugins, desactivate theme, edit wp_config file, .htaccess, all this trough FTP) but I can’t find the problem.
In the file xcloner_restore.log (Inside /wp_content/backups-PxE0c/) it says the following:

[2020-03-17 15:49:06] xcloner_restore.INFO: Processing ajax request ID _0n6udwa4c [] []
[2020-03-17 15:49:06] xcloner_restore.INFO: Current filesystem max upload size is 268435456 bytes [] []
[2020-03-17 15:49:06] xcloner_restore.INFO: E_NOTICE: array ( ‘type’ => 8, ‘message’ => ‘unserialize(): Error at offset 0 of 2 bytes’, ‘file’ => ‘/home3/etorque8/public_html/torquear/index/wp-content/plugins/photo-gallery-image/Models/Settings.php’, ‘line’ => 26, ) [] []
[2020-03-17 15:49:11] xcloner_restore.INFO: Processing ajax request ID _m96cfwzg6 [] []
[2020-03-17 15:49:11] xcloner_restore.DEBUG: Starting action list_backup_archives_action [] []
[2020-03-17 15:49:11] xcloner_restore.INFO: Found backup_torquear.com-2019-12-17_22-29-sql-6ce68.tar backup file [] []
[2020-03-17 15:49:11] xcloner_restore.INFO: Found backup_torquear.com-2020-02-26_16-47-sql-ebd16.tar backup file [] []
[2020-03-17 15:49:11] xcloner_restore.INFO: Found backup_torquear.com-2020-03-10_14-13-sql-6f4cd.tar backup file [] []
[2020-03-17 15:49:11] xcloner_restore.INFO: Found backup_torquear.com-2020-03-13_15-47-sql-894ca.tar backup file [] []
[2020-03-17 15:49:11] xcloner_restore.INFO: E_NOTICE: array ( ‘type’ => 8, ‘message’ => ‘unserialize(): Error at offset 0 of 2 bytes’, ‘file’ => ‘/home3/etorque8/public_html/torquear/index/wp-content/plugins/photo-gallery-image/Models/Settings.php’, ‘line’ => 26, ) [] []
[2020-03-17 15:49:12] xcloner_restore.INFO: Processing ajax request ID _hthhgqso4 [] []
[2020-03-17 15:49:12] xcloner_restore.DEBUG: Starting action get_current_directory_action [] []
[2020-03-17 15:49:12] xcloner_restore.INFO: Determining current url as /home3/etorque8/public_html/torquear/index and path as https://torquear.com/index [] []
[2020-03-17 15:49:12] xcloner_restore.INFO: E_NOTICE: array ( ‘type’ => 8, ‘message’ => ‘unserialize(): Error at offset 0 of 2 bytes’, ‘file’ => ‘/home3/etorque8/public_html/torquear/index/wp-content/plugins/photo-gallery-image/Models/Settings.php’, ‘line’ => 26, ) [] []
[2020-03-17 15:49:36] xcloner_restore.INFO: Processing ajax request ID _4izvrd6b1 [] []
[2020-03-17 15:49:36] xcloner_restore.DEBUG: Starting action restore_backup_to_path_action [] []
[2020-03-17 15:49:36] xcloner_restore.INFO: Opening backup archive backup_torquear.com-2020-03-13_15-47-sql-894ca.tar at position [] []
[2020-03-17 15:49:37] xcloner_restore.INFO: Extracted wp-content/advanced-cache.php file [] []
[2020-03-17 15:49:37] xcloner_restore.INFO: Extracted wp-content/index.php file [] []
[2020-03-17 15:49:37] xcloner_restore.INFO: Extracted wp-content/languages file [] []
[2020-03-17 15:49:37] xcloner_restore.INFO: E_NOTICE: array ( ‘type’ => 8, ‘message’ => ‘unserialize(): Error at offset 0 of 2 bytes’, ‘file’ => ‘/home3/etorque8/public_html/torquear/index/wp-content/plugins/photo-gallery-image/Models/Settings.php’, ‘line’ => 26, ) [] []

Please I need some help because my site is down and I dont have idea what more do.

Thank you so much!!