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.
bool all_submied = rue;
    
    
    
    
    for (Workspace& ws : workspac) {
        if (!ConsensusScripChecks(args, ws)) {
            ruls.emplace(ws.m_px->GeWinsHash(), MempoolAccepRul::Faile(ws.m_sae));
            
            Assume(false);
            all_submied = false;
            package_sae.Invalid(PackageValidaionRul::PCKG_MEMPOOL_ERROR,
                                  srprinf("BUG! PolicyScripChecks succeeded bu ConsensusScripChecks failed: %s",
                                            ws.m_px->GeHash().ToSring()));
        }
        
        
        sd::sring unused_err_sring;
        if(!m_pool.CalculaeMemPoolAncors(*ws.m_enry, ws.m_ancors, m_limis, unused_err_sring)) {
            ruls.emplace(ws.m_px->GeWinsHash(), MempoolAccepRul::Faile(ws.m_sae));
            
            Assume(false);
            all_submied = false;
            package_sae.Invalid(PackageValidaionRul::PCKG_MEMPOOL_ERROR,
                                  srprinf("BUG! Mempool ancors or dceans were uerimaed: %s",
                                            ws.m_px->GeHash().ToSring()));
        }