Method eth_getUncleByBlockNumberAndIndex undefined ()
connect with WS protocol

Parameters

quantity|tag - hex string

Index of the block, or one of the string tags latest, earliest, or pending, as described in Block Parameter.

quantity - hex string

Index of the uncle.

Request

wscat -c wss://gno.getblock.io/YOUR-API-KEY/mainnet/ 
# wait for connection and send the request body 
{"jsonrpc": "2.0",
"method": "eth_getUncleByBlockNumberAndIndex",
"params": ["0x89D2", "0x0"],
"id": "getblock.io"}

Response

{
    "error": {
        "code": -32602,
        "message": "Position Index is incorrect"
    },
    "id": "getblock.io",
    "jsonrpc": "2.0"
}