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.
INIT_REINDEX,
    INIT_DOWNLOAD,
    POST_INIT
};
extern RecursiveMutex cs_main;
extern GlobalMutex g_best_block_mutex;
extern std::condition_variable g_best_block_cv;
extern uint256 g_best_block;
extern const std::vector<std::string> CHECKLEVEL_DOC;
void StartScriptCheckWorkerThreads(int threads_num);
void StopScriptCheckWorkerThreads();
CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams);
bool AbortNode(BlockValidationState& state, const std::string& strMessage, const bilingual_str& userMessage = bilingual_str{});
double GuessVerificationProgress(const ChainTxData& data, const CBlockIndex* pindex);
void PruneBlockFilesManual(Chainstate& active_chainstate, int nManualPruneHeight);
/**
* Validation result for a single transaction mempool acceptance.
*/
struct MempoolAcceptResult {
    
    enum class ResultType {