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/be2182b23d12e09ed732b142cdf00114478c11cd/examples/NoiseGate You should set ROOT_URL correctly, otherwise the web may not work correctly.