Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '1' at line 1 in /var/www/vhosts/webspeicher.urania-planetarium.de/httpdocs/html/onlinereservierung/reinige_buchungen.php:33 Stack trace: #0 /var/www/vhosts/webspeicher.urania-planetarium.de/httpdocs/html/onlinereservierung/reinige_buchungen.php(33): mysqli->query() #1 /var/www/vhosts/webspeicher.urania-planetarium.de/httpdocs/html/onlinereservierung/index.php(8): require_once('...') #2 {main} thrown in /var/www/vhosts/webspeicher.urania-planetarium.de/httpdocs/html/onlinereservierung/reinige_buchungen.php on line 33