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