Fatal error: Uncaught TypeError: Argument 1 passed to JTL\Shop::setLanguage() must be of the type int, null given, called in /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/src/Session/Frontend.php on line 280 and defined in /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/src/Shop.php:820 Stack trace: #0 /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/src/Session/Frontend.php(280): JTL\Shop::setLanguage() #1 /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/src/Session/Frontend.php(93): JTL\Session\Frontend->updateGlobals() #2 /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/src/Session/Frontend.php(65): JTL\Session\Frontend->setStandardSessionVars() #3 /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/src/Session/Frontend.php(51): JTL\Session\Frontend->__construct() #4 /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/globalinclude.php(120): JTL\Session\Frontend::getInstance() #5 /var/www/vhosts/18941.cin-server.de/vitanosi.bio/index.php(6): require('/var/www in /var/www/vhosts/18941.cin-server.de/vitanosi.bio/includes/src/Shop.php on line 820