Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/commits/commit/7a9bb2b3c9157d9ef856f5b002ecc8b1026a5dd1/doc/images/LCD_characters_green You should set ROOT_URL correctly, otherwise the web may not work correctly.