Page froze, force closed mid-Discourse upgrade, what next?

I was upgrading a staging site just now after noticing that the latest version of Discourse has released.

No my problem is I left the page for a while and then came back to see it had frozen.

So I force closed it.

Oops?

At any rate, the site won’t load now.

I’m assuming I need to do something via command line at this point to complete the upgrade.

How should I proceed? Thanks in advance for any help.

See step #2:

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