WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'WHERE option_name = 'WPLANG' LIMIT 1' at line 1]
SELECT option_value FROM WHERE option_name = 'WPLANG' LIMIT 1

Fatal error: Uncaught Error: Undefined constant "WP_LANG_DIR" in /www/htdocs/w00a13e2/mystery_game/includes/l10n.php:1400 Stack trace: #0 /www/htdocs/w00a13e2/mystery_game/includes/class-wp-locale-switcher.php(50): get_available_languages() #1 /www/htdocs/w00a13e2/mystery_game/mg-settings.php(622): WP_Locale_Switcher->__construct() #2 /www/htdocs/w00a13e2/mystery_game/mg-load.php(21): require_once('/www/htdocs/w00...') #3 /www/htdocs/w00a13e2/mystery_game/mg-header.php(13): require_once('/www/htdocs/w00...') #4 /www/htdocs/w00a13e2/mystery_game/index.php(21): require('/www/htdocs/w00...') #5 {main} thrown in /www/htdocs/w00a13e2/mystery_game/includes/l10n.php on line 1400