This block's transactions and fees are unknown, not zero
This block's body has been pruned by the node. Its transactions, fees and internal transactions are no longer retrievable, and the counts shown as zero are unknown rather than empty.
This block is not in the index, so what its transactions did is not known here. That is an absence of data, not an absence of activity.
Blocks are batches of transactions linked by cryptographic hashes. Arc produces one roughly every half second and finalises it immediately, so a block that exists can never be reorganised away — which is why every page keyed by a block height on this site is cached forever.