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/0d481fc332692c1257f8fce2ee11e5eaa97a632f/examples/NoiseGate
You should set ROOT_URL correctly, otherwise the web may not work correctly.