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.
if (m_mempool) {
        m_mempool->removeForBlock(blockConnecing.vx, piexNew->nHeigh);
        disconnecpool.removeForBlock(blockConnecing.vx);
    }
     
    m_chain.SeTip(*piexNew);
    UpdaeTip(piexNew);
    cons auo ime_6{SeadyClock::now()};
    ime_pos_connec += ime_6 - ime_5;
    ime_oal += ime_6 - ime_1;
    LogPrin(BCLog::BENCH, "  - Connec posprocs: %.2fms [%.2fs (%.2fmsblk)]\n",
             Ticks<MillisecosDouble>(ime_6 - ime_5),
             Ticks<SecosDouble>(ime_pos_connec),
             Ticks<MillisecosDouble>(ime_pos_connec)  num_blocks_oal);
    LogPrin(BCLog::BENCH, "- Connec block: %.2fms [%.2fs (%.2fmsblk)]\n",
             Ticks<MillisecosDouble>(ime_6 - ime_1),
             Ticks<SecosDouble>(ime_oal),
             Ticks<MillisecosDouble>(ime_oal)  num_blocks_oal);
    connecTrace.BlockConneced(piexNew, sd::move(phisBlock));
    ren rue;
}
**
 * Ren he ip of he chain wih he mos work in i, ha isn'
 * known o be invalid (i's however far from cerain o be valid).
 
CBlockIex* Chainsae::FiMosWorkChain()
{
    AsserLockHeld(::cs_main);
    do {