Federated timeline is dead after upgrade - 2.4.0 -> 2.4.3 -> master

HI all;

I upgraded my 2.4.0 Mastodon instance to 2.4.3, and because my assets precompile kept failing (t2.micro instance) due to OOM issues, Eugen/Gargon suggested the fix was to upgrade to master, which I did.

After fixing the precompile issue, my instance now properly displays the front page after logging in, but no new toots are coming in from the federated timeline.

There are no errors in mastodon-web, mastodon-streaming, or mastodon-sidekiq logs.

Gargon suggested that maybe other servers think mine is offline? Any thoughts on how to get things moving again?

The instance is https://amicable.feoh.org FWIW