Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/8125a895e45b3767ced5adec2d6bf3b0e01b2010/third-party/Bounce2/examples/bounce2buttons
You should set ROOT_URL correctly, otherwise the web may not work correctly.
