Mixin transformation failed

[Intezium]

I need help.. Log File.

@Mixin(CraftingResultSlot.class)
public class CraftingResultSlotMixin {
    @Inject(at = @At(
            value = "INVOKE",
            target = "dropItem(Lnet/minecraft/item/ItemStack;Z)Lnet/minecraft/entity/ItemEntity;V"),
            method = "onTakeItem(Lnet/minecraft/entity/player/PlayerEntity;Lnet/minecraft/item/ItemStack;)V",
            cancellable = true)
    private void onTakeItem(final PlayerEntity player, final ItemStack itemStack, final CallbackInfoReturnable<Boolean> info) {
        ActionResult result = TakeCraftingItem.EVENT.invoker().interact(player, itemStack);

        if (result == ActionResult.FAIL) {
            info.cancel();
        }
    }
}

[warjort]

You are missing the class name for the dropItem and you seem to be trying to give it two return values? :-)
It should be more like this (I haven't tested it)
target = "Lnet/minecraft/entity/player/PlayerEntity;dropItem(Lnet/minecraft/item/ItemStack;Z)Lnet/minecraft/entity/ItemEntity;"),

[Intezium]

I checked your code, invalid descriptor. Log
I also copied the path to PlayerEntity from Intellij Idea.

[warjort]

Your method signature is wrong, it should be
private void onTakeItem(final PlayerEntity player, final ItemStack itemStack, final CallbackInfo info) {

You don't have access to a return value because you intercepting BEFORE the call to the method with INVOKE.

[Intezium]

Ohh my mind... It's really not obvious. Thank!