Fatal error: Uncaught TypeError: Argument 1 passed to WP_Translation_Controller::set_locale() must be of the type string, null given, called in /home/customer/www/drugacno-pohistvo.com/public_html/wp-includes/l10n.php on line 799 and defined in /home/customer/www/drugacno-pohistvo.com/public_html/wp-includes/l10n/class-wp-translation-controller.php:87 Stack trace: #0 /home/customer/www/drugacno-pohistvo.com/public_html/wp-includes/l10n.php(799): WP_Translation_Controller->set_locale(NULL) #1 /home/customer/www/drugacno-pohistvo.com/public_html/wp-includes/l10n.php(1005): load_textdomain('stops-core-them...', '/home/customer/...', NULL) #2 /home/customer/www/drugacno-pohistvo.com/public_html/wp-content/plugins/stops-core-theme-and-plugin-updates/main.php(87): load_plugin_textdomain('stops-core-them...', false, 'stops-core-them...') #3 /home/customer/www/drugacno-pohistvo.com/public_html/wp-content/plugins/stops-core-theme-and-plugin-updates/main.php(57): MPSUM_Updates_Manager->__construct() #4 /home/customer/www/drugacno-p in /home/customer/www/drugacno-pohistvo.com/public_html/wp-includes/l10n/class-wp-translation-controller.php on line 87