Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/OpenAudio_ArduinoLibrary/src/commit/c2a9ac34a28cda07e3a5d08c3616af33fd863035/docs/jquery
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Chip Audette