@aliazcaa - it might be helpful to raise an issue on our GitHub issue page, since that’s where we prefer to track things like startup errors etc 
Perhaps open an issue there, describe the problem, and paste in the contents of the log files for us? - they’re usually seen at ~/.sonic-pi/log. The most useful logs are usually server-errors.log, server-output.log and scsynth.log…
Hi aliazcaa
The deb you refer to was for an earlier version of Ubuntu.
Try this one which I have built for Ubuntu 21.04
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