#### System information Geth version: `v1.10.0` OS & Version: Ubuntu 18.04.5 LTS #### Expected behaviour eth_protocolVersion returns protocol version #### Actual behaviour go-ethereum returns: `the method eth_protocolVersion does not exist/is not available` #### Steps to reproduce the behaviour `curl -X POST --data '{"jsonrpc":"2.0","method":"eth_protocolVersion","params":[],"id":67}' -H "Content-Type: application/json" http://localhost:8545`