Fatal error: Uncaught TypeError: WP_Translation_Controller::set_locale(): Argument #1 ($locale) must be of type string, null given, called in /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n.php on line 803 and defined in /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n/class-wp-translation-controller.php:87
Stack trace:
#0 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n.php(803): WP_Translation_Controller->set_locale(NULL)
#1 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n.php(1391): load_textdomain('storefront', '/home/httpd/vho...', NULL)
#2 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n.php(1408): _load_textdomain_just_in_time('storefront')
#3 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n.php(194): get_translations_for_domain('storefront')
#4 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n.php(306): translate('Primary Menu', 'storefront')
#5 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-content/themes/ilaughyou/inc/class-storefront.php(92): __('Primary Menu', 'storefront')
#6 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/class-wp-hook.php(324): Storefront->setup('')
#7 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#8 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#9 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-settings.php(682): do_action('after_setup_the...')
#10 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-config.php(89): require_once('/home/httpd/vho...')
#11 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-load.php(50): require_once('/home/httpd/vho...')
#12 /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#13 /home/httpd/vhosts/seez.ch/i-laugh-you.com/index.php(17): require('/home/httpd/vho...')
#14 {main}
  thrown in /home/httpd/vhosts/seez.ch/i-laugh-you.com/wp-includes/l10n/class-wp-translation-controller.php on line 87