Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/commits/commit/5c630f9242d1a45497966ba2cc9f1b7d6144a70f/doc/images/LCD_characters_green You should set ROOT_URL correctly, otherwise the web may not work correctly.