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/e2d4f5a45a4c7eb39e818da69f1c4df9dde60a14/examples/TestTwinPeaks
You should set ROOT_URL correctly, otherwise the web may not work correctly.