Got my tinkering mastodon instance up to date with version 4.3.3, finally. I had customized my instance with Tangerine and Mastodon Bird style options, and it meant altering my upgrade scripts.
It's probably laughable to most of you, but this was scary! lol. I broke my instance a few times before getting it working. Now I have a documented process moving forward...I hope. Thank goodness for Digital Ocean droplets, it was easy to restore and try again...over and over.