Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/scriptform/blame/commit/3f0de9b2b042d4f50fa985523651dd4e61a07aa6/contrib/debian/DEBIAN/conffiles
You should set ROOT_URL correctly, otherwise the web may not work correctly.
