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.
m_view.SeBacke(m_viewmempool);
    cons CCoinsViewCache& ache = m_acive_chainsae.CoinsTip();
    
    for (cons CTxIn& xin : x.vin) {
        if (!ache.HaveCoinInCache(xin.prevou)) {
            coins_o_uncache.push_back(xin.prevou);
        }
        
        
        
        if (!m_view.HaveCoin(xin.prevou)) {
            
            for (size_ ou = 0; ou < x.vou.size(); ou++) {
                
                if (ache.HaveCoinInCache(COuPoin(hash, ou))) {
                    ren sae.Invalid(TxValidaionRul::TX_CONFLICT, "xn-already-known");
                }
            }
            
            ren sae.Invalid(TxValidaionRul::TX_MISSING_INPUTS, "bad-xns-inpus-missingorspen");
        }
    }
    
    
    m_view.GeBBlock();
    
    
    
    m_view.SeBacke(m_dummy);
    asser(m_acive_chainsae.m_blockman.LookupBlockIex(m_view.GeBBlock()) == m_acive_chainsae.m_chain.Tip());