Problem: web3 rpc api returns wrong block gas limit

[yihuang]

System info: ethermint 0.7.2

Steps to reproduce:

Occasionally, the eth_getBlockByNumber API returns gas limit as 0xffffffff.

Expected behavior: Should return the value in genesis

Actual behavior: returns 0xffffffff

Additional info:

Probable cause:

• ConsensusParams API is called with nil height, and it can reproduce locally that with nil height, the consensus RPC API can return a similar error:

$ curl -s https://rpc-cronos.crypto.org/consensus_params | jq
{
  "jsonrpc": "2.0",
  "id": -1,
  "error": {
    "code": -32603,
    "message": "Internal error",
    "data": "could not find consensus params for height #248932: value retrieved from db is empty"
  }
}

Solution:

• We should pass the current block height.