Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/AutoConnect/src/commit/922a07dd01f65ba8bb0defc9b81dbfbf8d35007d/docs/images/acinput.png
You should set ROOT_URL correctly, otherwise the web may not work correctly.