PHP ERROR

Fatal error: Uncaught Exception: DateTime::__construct(): Failed to parse time string (X-10-11 11:31:44) at position 4 (-): Double timezone specification in /var/www/html/blog/wp-content/plugins/ad-inserter/ad-inserter.php:5199 Stack trace: #0 /var/www/html/blog/wp-content/plugins/ad-inserter/ad-inserter.php(5199): DateTime->__construct(‘X-10-11 11:31:4…’) #1 /var/www/html/blog/wp-content/plugins/ad-inserter/ad-inserter.php(7819): ai_load_settings() #2 /var/www/html/blog/wp-settings.php(362): include_once(‘/var/www/html/b…’) #3 /var/www/html/blog/wp-config.php(106): require_once(‘/var/www/html/b…’) #4 /var/www/html/blog/wp-load.php(37): require_once(‘/var/www/html/b…’) #5 /var/www/html/blog/wp-admin/admin.php(34): require_once(‘/var/www/html/b…’) #6 /var/www/html/blog/wp-admin/index.php(10): require_once(‘/var/www/html/b…’) #7 {main} thrown in /var/www/html/blog/wp-content/plugins/ad-inserter/ad-inserter.php on line 5199