the command "bitcoin-cli getblockstats 0000000000000000000c61ff8f761ce509fc8901d3c22d61fec89637042ea2ba" does not work.

It displays "error: Error parsing JSON:0000000000000000000c61ff8f761ce509fc8901d3c22d61fec89637042ea2ba"

but it should display the block stats like the documentation says.

also bitcoin-cli getblockstats 0 does not work. block number must be at least 1 to work. But blocks start at 0.

tested with 0.20.1 on freebsd, another user on IRC acknowledged the problem.
{
    return RPCHelpMan{"gettxout",
        "\nReturns details about an unspent transaction output.\n",
        {
            {"txid", RPCArg::Type::STR, RPCArg::Optional::NO, "The transaction id"},
            {"n", RPCArg::Type::NUM, RPCArg::Optional::NO, "vout number"},
            {"include_mempool", RPCArg::Type::BOOL, RPCArg::Default{true}, "Whether to include the mempool. Note that an unspent output that is spent in the mempool won't appear."},
        },
        {
            RPCResult{"If the UTXO was not found", RPCResult::Type::NONE, "", ""},
            RPCResult{"Otherwise", RPCResult::Type::OBJ, "", "", {
                {RPCResult::Type::STR_HEX, "bestblock", "The hash of the block at the tip of the chain"},
                {RPCResult::Type::NUM, "confirmations", "The number of confirmations"},
                {RPCResult::Type::STR_AMOUNT, "value", "The transaction value in " + CURRENCY_UNIT},
                {RPCResult::Type::OBJ, "scriptPubKey", "", {