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/8053ab5bf5dde4599e7039eaeb3499d8f79f5a1e?style=unified&whitespace=ignore-all
You should set ROOT_URL correctly, otherwise the web may not work correctly.