Bug Description

I got off of SevTech Ages Of The Sky, the next day, I got on to keep playing, but it seems like my world is now in age 1? my Advancemnets say I'm in age 4. I have progressed up to age 4, but now I can't do anything to progress. I have tried restarting my game, and that didn't work, and when I type in any command, it says, "An unknown error occurred while attempting to perform this command. Here are my logs from before the issue and after the issue.

Did this behavior use to work in the previous version?

N/A

Steps to Reproduce (for bugs)

1. Launch the game
2. Open the world
3. Almost everything is unfamiliar or changed types

Logs

• Client/Server Log:
  Before: 2020-11-13-5.log
  After: 2020-11-14-1.log

• Crash Log:
  N/A

Client Information

• Modpack Version:1.12.2
• Java Version:
• Launcher Used:Twitch
• Memory Allocated: 8gb
• Server/LAN/Single Player: SP
• Optifine Installed: Yes
• Shaders Enabled: Yes

World Information

• Modpack Version world created in: 3.2.0-alpha.4-skyblock
• Additional Content Installed: