After doing some research, I believe the easiest thing to do is simply make a 1:1 recreation of the old world in the new version. Since we were only about 130 days into the game, there isn't really much to create, and in creative mode, we should be able to remake it in a day or two.
Posts by Trillium Grandiflorum
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Server was working fine earlier today, but sky factory 3 updated and since then, the server does not allow you to join. At first it gave the error of
"Internal Exception: java.lang.IllegalArgumentException: The name extrautils2:synergy has been registered twice, for Block{null} and Block{extrautils2:synergy} ."I believe this issue has been fixed but now it gives the error
"Fatally missing blocks and items"