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/2ff6ebd02f8517784e644c3251e112f4e18f57f4/examples/TestEqualizer1
You should set ROOT_URL correctly, otherwise the web may not work correctly.