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 MempoolAcceptResult(state);
    }
    static MempoolAcceptResult Success(std::list<CTransactionRef>&& replaced_txns, int64_t vsize, CAmount fees) {
        return MempoolAcceptResult(std::move(replaced_txns), vsize, fees);
    }
    static MempoolAcceptResult MempoolTx(int64_t vsize, CAmount fees) {
        return MempoolAcceptResult(vsize, fees);
    }
    static MempoolAcceptResult MempoolTxDifferentWitness(const uint256& other_wtxid) {
        return MempoolAcceptResult(other_wtxid);
    }
private:
    
    explicit MempoolAcceptResult(TxValidationState state)
        : m_result_type(ResultType::INVALID), m_state(state) {
            Assume(!state.IsValid()); 
        }
    
    explicit MempoolAcceptResult(std::list<CTransactionRef>&& replaced_txns, int64_t vsize, CAmount fees)
        : m_result_type(ResultType::VALID),
        m_replaced_transactions(std::move(replaced_txns)), m_vsize{vsize}, m_base_fees(fees) {}
    
    explicit MempoolAcceptResult(int64_t vsize, CAmount fees)