Sky Factory 3 Not working



Modpack Name:
Sky Factory 3
Modpack Version (E.g Infinity 2.2.1):
Sky Factory 3.0.15
Launcher Version (E.g 1.4.10 or Curse):
Most recent Twitch app
Link to Log (Required):
Have you made any changes to the pack? (If yes please list the changes):
Issue Details:
“The game crashed whilst unexpected error
Error: java.lang.ClassCastException: not an ItemStack, ItemStack[] or List”
Only fix I have found so far is getting a new mc account every time I want to play but I want to play on my main accounts. I have tried everything I can think of to fix this I just need some help.


Are you using legit accounts?

Could you please follow instructions found here to get full log:


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