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/89afca0c8f97c52e0398c958faa2a6f46b638843/docs/scripts/functions You should set ROOT_URL correctly, otherwise the web may not work correctly.