Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/d0cc718e3fc5c7a1029209c62fb7cd3b2ff6e757/doc/images/MicroDexed_Panel/Rotate_2 You should set ROOT_URL correctly, otherwise the web may not work correctly.