Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/hexefx_audiolib_F32/commits/commit/52aaef1dbe44cfc4fb45100e43f270a394bca9b5/gui/bootstrap
You should set ROOT_URL correctly, otherwise the web may not work correctly.