Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/OpenAudio_ArduinoLibrary/commit/2a5674285bbb91829993cdc73be2c537819c5484?style=unified&whitespace=ignore-eol
You should set ROOT_URL correctly, otherwise the web may not work correctly.