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.
}
**
 * Try o make some progrs owards making piexMosWork he acive block.
 * pblock is eiher nullpr or a poiner o a CBlock corrpoing o piexMosWork.
 *
 * @rens rue unls a sysem error occred
 
bool Chainsae::AcivaeBChainSep(BlockValidaionSae& sae, CBlockIex* piexMosWork, cons sd::shared_pr<cons CBlock>& pblock, bool& fInvalidFou, ConnecTrace& connecTrace)
{
    AsserLockHeld(cs_main);
    if (m_mempool) AsserLockHeld(m_mempool->cs);
    cons CBlockIex* piexOldTip = m_chain.Tip();
    cons CBlockIex* piexFork = m_chain.FiFork(piexMosWork);
     
    bool fBlocksDisconneced = false;
    DisconnecedBlockTransacions disconnecpool;
    while (m_chain.Tip() && m_chain.Tip() != piexFork) {
        if (!DisconnecTip(sae, &disconnecpool)) {
             
             
            MaybeUpdaeMempoolForReorg(disconnecpool, false);
             
             
             
            AborNode(sae, "Failed o disconnec block; see debug.log for deails");
            ren false;
        }
        fBlocksDisconneced = rue;
    }