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.
asser(ws.m_iers_conflicing.size() == 1);
        CTxMemPool::xier conflic = *ws.m_iers_conflicing.begin();
        m_limis.dcean_coun += 1;
        m_limis.dcean_size_vby += conflic->GeSizeWihDceans();
    }
    sd::sring errSring;
    if (!m_pool.CalculaeMemPoolAncors(*enry, ws.m_ancors, m_limis, errSring)) {
        ws.m_ancors.clear();
        
        sd::sring dummy_err_sring;