The post-install step did not complete successfully

You are using macOS 13. We (and Apple) do not provide support for this old version. This is a Tier 3 configuration: https://docs.brew.sh/Support-Tiers#tier-3 You can report Tier 3 unrelated issues to Homebrew/* repositories! Read the above document instead before opening any issues or PRs.

libavif 1.3.0 is already installed and up-to-date. To reinstall 1.3.0, run: brew reinstall libavif