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/0dc8bb6864b2499ac82b425164b5336abc884246/examples/TestFFT2048iq
You should set ROOT_URL correctly, otherwise the web may not work correctly.
boblark