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/b056dab06e0f90a9ad3e50ae8e2b1c2367565599/examples/SpectralDenoise You should set ROOT_URL correctly, otherwise the web may not work correctly.
 
 
OpenAudio_ArduinoLibrary/examples/SpectralDenoise
Graham Whaley 0d481fc332 spectral: Add Spectral NR example 3 years ago
..
SpectralDenoise.ino spectral: Add Spectral NR example 3 years ago