Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/7b27aa9d9c31fe3ba8b39f10767af2d63006da44/doc/images/MicroDexed_Panel/Transparent%20images/Rotate%202/Presets%20Right%202.png
You should set ROOT_URL correctly, otherwise the web may not work correctly.
