Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/esp-link/blame/commit/d77b1e6c4137037cb781f4afdf6fc75e90c5fc54/espfs/mkespfsimage/Makefile
You should set ROOT_URL correctly, otherwise the web may not work correctly.