Hi @jsalem
That is not a release branch of Galaxy. Stable releases are listed here with release notes: Galaxy Documentation — Galaxy Project 23.3.dev0 documentation
Apart from that, it looks as if Samtools was not installed OR the resulting BAMs had no hits (are empty). So – this is a configuration or resource issue.
That same docs site has help about how to manage dependencies, custom configurations, scaling. Stable releases will now install Samtools when the instance is first started up when the defaults are used.
Prior Q&A that may also help: Example step-by-step for a basic local Galaxy install with an admin account created