Fatal error: Uncaught TypeError: JTL\Shop::setLanguage(): Argument #1 ($languageID) must be of type int, null given, called in /customers/3/4/1/mobi-handel.com/httpd.www/includes/src/Session/Frontend.php on line 331 and defined in /customers/3/4/1/mobi-handel.com/httpd.www/includes/src/Shop.php:372 Stack trace: #0 /customers/3/4/1/mobi-handel.com/httpd.www/includes/src/Session/Frontend.php(331): JTL\Shop::setLanguage(NULL, NULL) #1 /customers/3/4/1/mobi-handel.com/httpd.www/includes/src/Session/Frontend.php(117): JTL\Session\Frontend->updateGlobals() #2 /customers/3/4/1/mobi-handel.com/httpd.www/includes/src/Session/Frontend.php(75): JTL\Session\Frontend->setStandardSessionVars() #3 /customers/3/4/1/mobi-handel.com/httpd.www/includes/src/Session/Frontend.php(61): JTL\Session\Frontend->__construct(true, 'JTLSHOP') #4 /customers/3/4/1/mobi-handel.com/httpd.www/includes/globalinclude.php(96): JTL\Session\Frontend::getInstance() #5 /customers/3/4/1/mobi-handel.com/httpd.www/index.php(5): require('/customers/3/4/...') #6 {main} thrown in /customers/3/4/1/mobi-handel.com/httpd.www/includes/src/Shop.php on line 372