First time having issues upgrading Mastodon.
I first tried to upgrade to v2.4.3 but I got this issue: https://github.com/tootsuite/mastodon/issues/8001
Then I tried to upgrade to v2.4.2, but I got a weird issue : "[FATAL tini (5)] exec rails failed: No such file or directory"
So, I restored the database to remove the migrations introduced by v2.4.3 and now I came back to 2.3.3.
I will wait some time before trying again v2.4.3
At least it works with the current setup.