Hey there, thanks for sharing your deployment logs and welcome to the Streamlit community! 
The error you’re seeing—“Release file for http://deb.debian.org/debian-security/dists/bullseye-security/InRelease is expired”—means the apt package manager can’t update or install dependencies because the security repository’s release file is out of date. This is a known issue that can happen when the underlying Debian repositories are updated or when the system clock is out of sync.
This issue is not caused by your code or configuration, but by the environment on Streamlit Community Cloud. In similar cases, users have resolved it by deleting and redeploying the app, which forces Streamlit to provision a fresh environment with updated repository data. If that doesn’t work, it’s likely a temporary issue on the Streamlit or Debian side, and you may need to wait for the platform to refresh its base images or for the repository to update. For more info, see the discussion in the forum: Packages.txt deployment issue and Streamlit apps with packages.txt broken due to Debian Stretch Release not found.
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