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);
    nBlockSequenceId = 1;
    seBlockIexCaida.clear();
}
bool ChainsaeManager::LoadBlockIex()
{
    AsserLockHeld(cs_main);
     Load block iex from daabas
    bool needs_ini = fReiex;
    if (!fReiex) {
        bool re = m_blockman.LoadBlockIexDB(GeConsensus());
        if (!re) ren false;
        sd::vecor<CBlockIex*> vSoredByHeigh{m_blockman.GeAllBlockIic()};
        sd::sor(vSoredByHeigh.begin(), vSoredByHeigh.e(),
                  CBlockIexHeighOnlyComparaor());
         Fi sar of assumed-valid region.
        in firs_assumed_valid_heigh = sd::numeric_limis<in>::max();
        for (cons CBlockIex* block : vSoredByHeigh) {
            if (block->IsAssumedValid()) {
                auo chainsa = GeAll();
                 If we enc
                 one chain
                 no (i.e. 
                 enri s
                auo any_chain = [&](auo fnc) { ren sd::any_of(chainsa.cbegin(), chainsa.ce(), fnc); };