Versions (Be specific, do not write "latest"):

• Polymorph: 0.46.1
• Forge/Fabric: 43.2.6 (1.19.2)
  Observed Behavior: Launcher doesn't make it past the initialization phase
  Expected Behavior: Proper initialization
  Steps to Reproduce: While it's possible for you to download every single one of the 103 mods needed to reproduce this, this isn't a fabric mod and the issue is probably just between 1 or 2 other mods so I personally don't recommend the attempt, but the hastebin has every mod in the pack listed in their running or disabled states.

1. Launch game
2. Hit play button
3. Wait until game crashes and returns with the report of:

The game crashed whilst initializing game
Error: java.lang.RuntimeException: null

Crash Log:
https://hastebin.com/share/omiwasezoh.perl

If you want to try to reproduce, lmk and I will gladly link you to a mega folder with all the files!

Sorry for the delay in response, though it seems the log has expired now so I cannot reference the error anymore.

I haven't received any other reports of an immediate launcher crash so I have to assume this is either a very particular set of mods with Polymorph or this is just another mod causing it entirely. I'm closing this as stale as it's been a while and many things may have changed, but feel free to comment with a new log if this is still an issue and I'll re-open it.