Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/64fdee843d562b2d1814593a0735ace3596155c9/third-party/Bounce2/docs/files/search/close.png
You should set ROOT_URL correctly, otherwise the web may not work correctly.