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/c9553fb3bb1589c756e04924df780983b93a36db/examples/TestFFT1024
You should set ROOT_URL correctly, otherwise the web may not work correctly.
boblark