Fehlermeldung

• Warning: Undefined array key "DO" in require_once() (Zeile 1259 von /var/www/connect/php/symposium2024/configuration_deutsch.inc).
• Warning: Undefined array key "test" in include() (Zeile 28 von /var/www/connect/php/symposium2024/register.php).
• Warning: Undefined array key "action" in include() (Zeile 43 von /var/www/connect/php/symposium2024/register.php).
• Warning: Undefined array key "action" in include() (Zeile 43 von /var/www/connect/php/symposium2024/register.php).
• Warning: Undefined array key "hotel_only" in include() (Zeile 45 von /var/www/connect/php/symposium2024/register.php).
• Warning: Undefined array key "hotel_only" in header_anmeldung() (Zeile 231 von /var/www/connect/php/symposium2024/register.php).
• Warning: Undefined array key "username" in initialize_values() (Zeile 106 von /var/www/connect/php/symposium2024/symposium.inc).