Fatal error: Uncaught TypeError: Argument 1 passed to WP_Translation_Controller::set_locale() must be of the type string, null given, called in /home/WH537202790/wwwroot/wp-includes/l10n.php on line 803 and defined in /home/WH537202790/wwwroot/wp-includes/l10n/class-wp-translation-controller.php:87 Stack trace: #0 /home/WH537202790/wwwroot/wp-includes/l10n.php(803): WP_Translation_Controller->set_locale() #1 /home/WH537202790/wwwroot/wp-admin/includes/admin.php(17): load_textdomain() #2 /home/WH537202790/wwwroot/wp-admin/includes/upgrade.php(17): require_once('/home/WH5372027...') #3 /home/WH537202790/wwwroot/wp-content/plugins/tag-manager-header-body-footer/include/install.php(10): require_once('/home/WH5372027...') #4 /home/WH537202790/wwwroot/wp-content/plugins/tag-manager-header-body-footer/index.php(41): require_once('/home/WH5372027...') #5 /home/WH537202790/wwwroot/wp-settings.php(517): include_once('/home/WH5372027...') #6 /home/WH537202790/wwwroot/wp-config.php(96): require_once('/home/WH5372027...') #7 /home/WH5 in /home/WH537202790/wwwroot/wp-includes/l10n/class-wp-translation-controller.php on line 87

Fatal error: Uncaught TypeError: Argument 1 passed to WP_Translation_Controller::set_locale() must be of the type string, null given, called in /home/WH537202790/wwwroot/wp-includes/l10n.php on line 803 and defined in /home/WH537202790/wwwroot/wp-includes/l10n/class-wp-translation-controller.php:87 Stack trace: #0 /home/WH537202790/wwwroot/wp-includes/l10n.php(803): WP_Translation_Controller->set_locale() #1 /home/WH537202790/wwwroot/wp-includes/l10n.php(957): load_textdomain() #2 /home/WH537202790/wwwroot/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain() #3 [internal function]: WP_Fatal_Error_Handler->handle() #4 {main} thrown in /home/WH537202790/wwwroot/wp-includes/l10n/class-wp-translation-controller.php on line 87