Your ROOT_URL in app.ini is https://gitea.jennalody.de/ but you are visiting https://gitea.jenslody.de/jenna/gnome-shell-extension-openweather/blame/commit/e0d711cb938725e4523c1a8876c73b42c9a3bfee/.gitignore You should set ROOT_URL correctly, otherwise the web may not work correctly.