What is json-rpc error

JSON-rock error
Hi guys I’m new to MetaMask and I recently deposited some coins/tokens into my wallet using the GOCHAIN network first of all I think I set the account up as private. But my issue is I’m practicing sending my tokens to an exchange but it’s telling me I can’t due to a json-rpc error I would love some help thanks

Welcome to the MetaMask Community @Info1!! :fox_face: :rocket:

Check that you’ve correctly added the network to your MetaMask wallet and try the transaction again. Let us know if this doesn’t resolve the issue.