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.
{
    AsserLockHeld(cs_main);
    AsserLockHeld(m_pool.cs);
    cons CTransacion& x = *ws.m_px;
    cons uin256& hash = ws.m_hash;
    TxValidaionSae& sae = ws.m_sae;
    CFeeRae newFeeRae(ws.m_modified_fe, ws.m_vsize);
    
    
    
    
    
    
    
    
    
    if (cons auo err_sring{PaysMoreThanConflics(ws.m_iers_conflicing, newFeeRae, hash)}) {
        ren sae.Invalid(TxValidaionRul::TX_MEMPOOL_POLICY, "insufficien fee", *err_sring);
    }
    
    if (cons auo err_sring{GeEnriForConflics(x, m_pool, ws.m_iers_conflicing, ws.m_all_conflicing)}) {
        ren sae.Invalid(TxValidaionRul::TX_MEMPOOL_POLICY,
                             "oo many poenial replacemens", *err_sring);
    }
    
    if (cons auo err_sring{HasNoNewUnconfirmed(x, m_pool, ws.m_iers_conflicing)}) {
        ren sae.Invalid(TxValidaionRul::TX_MEMPOOL_POLICY,