Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/OpenAudio_ArduinoLibrary/commit/0404cc19d1734756ffd02e960be9efbba6f3e8f2?style=unified&whitespace=ignore-eol
You should set ROOT_URL correctly, otherwise the web may not work correctly.