Redis-server.service somehow not found

So we’re upgrading to PHP 8.2, and after wrasslin’ with Travis for a bit, we mostly got it to work, except that apparently the redis-server service isn’t starting. This message shows up in our logs:

$ sudo systemctl start redis-server
Failed to start redis-server.service: Unit redis-server.service not found.

Job link: Travis CI - Test and Deploy with Confidence The error is on line 163 of that log.

Any help would be appreciated. Thanks!