to clear up any confusion for those watching as to what happened on the final last stand obstacle there was a redstone error which prevented the command block to remove the walls from working why it did this we don't know but it was fixed afterwards so that it won't happen again
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to clear up any confusion for those watching as to what happened on the final last stand obstacle there was a redstone error which prevented the command block to remove the walls from working why it did this we don't know but it was fixed afterwards so that it won't happen again