Your ROOT_URL in app.ini is https://gitea.jennalody.de/ but you are visiting https://gitea.jenslody.de/jenna/gnome-shell-extension-openweather/commit/0fb1c739ba392f077e662a37c80f19dc2249ada8?style=split&whitespace=show-all
You should set ROOT_URL correctly, otherwise the web may not work correctly.