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User was banned for piracy. Buy the game.

LazyOptional is just that: An optional value that is computed lazily.   No, you need to create a combined IItemHandler by using CombinedInvWrapper. This should not happen inside getCapability, you should create this handler and the LazyOptional once (in your class' constructor) and then just return the value in getCapability.

That log does not even contain Forge. Please post a screenshot of your logs folder.

Do i need to return a list of ItemHandlers?