Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/commits/commit/a6b4e56048332ce32e24896508ba8602d95d7fc1/doc/manuals/MicroDexed-User_Manual/images/10_EG-BIAS_1.png You should set ROOT_URL correctly, otherwise the web may not work correctly.