Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/167f5b01624c4c62ccc42b833d2ac82bc2625af2/third-party/TeensyVariablePlayback/test/resources/input/PNO1C1.raw
You should set ROOT_URL correctly, otherwise the web may not work correctly.