getblockhash: throw JSONRPCError (not runtime_error)
getblockhash: throw JSONRPCError (not runtime_error)

Rebased-from: 6261e6e6e0ae9860d322efe0f11d0960b300dad4

litecoin-project/bitcoinomg,litecoin-project/bitcoinomg,litecoin-project/bitcoinomg,litecoin-project/bitcoinomg