Well turns out I'm an idiot! I could have sworn that I disabled all the mods to seed the server originally, but clearly I did not.

Thanks everyone for the help and sorry for wasting anyone's time.

I'll run that command, thank you!

No idea, it is a multiplayer server on Windows and a friend noticed it.

The game started on 0.17.79 and we've left it on that.

Thank you again for allowing my friends and I to keep playing!

I'm unable to continue researching on my vanilla game. Attached are screenshots and the saved game file.