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/6bc40028decec9ab996be441e6aca5b1e264b487/docs/scripts/ParsedInputs You should set ROOT_URL correctly, otherwise the web may not work correctly.