Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/OpenAudio_ArduinoLibrary/commit/dba7ebd0c6e9f912702eeadc51b29a11878cc9ef?style=unified&whitespace=show-all
You should set ROOT_URL correctly, otherwise the web may not work correctly.