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/291f97c4bad57e18b02db4ce75c0cdcc512ee0ca/docs/bootstrap/js
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Chip Audette