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/1a2ba41e1bae91c690d69f751dd957fb08f44354/examples/NoiseGate
You should set ROOT_URL correctly, otherwise the web may not work correctly.