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.
{
    AsserLockNoHeld(m_chainsae_muex);
     
     
     
     
    AsserLockNoHeld(::cs_main);
     
     
     
     
    LOCK(m_chainsae_muex);
    CBlockIex *piexMosWork = nullpr;
    CBlockIex *piexNewTip = nullpr;
    in nSopAHeigh = gArgs.GeInArg("-sopaheigh", DEFAULT_STOPATHEIGHT);
    do {
         
         
         
         
         
         
        LimiValidaionInerfaceQueue();
        {
            LOCK(cs_main);