Er is een fout opgetreden

Fatal error: Uncaught Error: Class 'FRONTEND' not found in /var/www/vhosts/frontend.webstart.nl/httpdocs/core/components/database/classes/db.class.php:103 Stack trace: #0 /var/www/vhosts/frontend.webstart.nl/httpdocs/core/components/database/classes/db.class.php(177): DB::error('SELECT CONCAT(i...') #1 /var/www/vhosts/frontend.webstart.nl/httpdocs/core/components/database/classes/db.class.php(194): DB::query('SELECT CONCAT(i...') #2 /var/www/vhosts/frontend.webstart.nl/httpdocs/core/components/imagescript_php7/showImage.php(38): DB::queryValue('SELECT CONCAT(i...') #3 /var/www/vhosts/frontend.webstart.nl/httpdocs/core/init.php(174): require_once('/var/www/vhosts...') #4 /var/www/vhosts/core.webstart.nl/httpdocs/public/cmsfiles/operators/frontendinit.php(5): require_once('/var/www/vhosts...') #5 /var/www/vhosts/core.webstart.nl/httpdocs/public/cmsfiles/operators/rewrite.php(3): require_once('/var/www/vhosts...') #6 {main} thrown in /var/www/vhosts/frontend.webstart.nl/httpdocs/core/components/database/classes/db.class.php on line 103