Just to check, you aren’t installing a fresh v4.5.7 instance, right? It’s a little unclear from your steps to reproduce.
If not, it’s cool that you’re upgrading! Hope you plan on making it all the way from v4.5.7 to the current LTS (6.7) or latest version (7.7)
Based on the logs, I would check and make sure your former SonarQube Service is fully stopped, specifically make sure you have no lingering java processes that maybe didn’t stop all the way.
I’d also give a read to all the Upgrade Notes between v4.5.7 and v5.6. I’ve never actually handled an upgrade between these versions (4.5 was initially released in September 2014), so, unfortunately, I don’t have a lot of common “gotchas” to share.
I would, however, try and browse to the
/setup URL it suggests. Maybe in days of SonarQube past, the web server isn’t considered “started” until the database migration has finished.