Error 'Internal JSON-RPC error' when trying to interact with other networks

If you are interacting with sidechains or custom networks, we highly recommend you read our user guide here.

If you get the error "Internal JSON-RPC error" while trying to interact with other networks, try the following:

• Ensure the network has been added correctly. See our article on adding networks to find out how to do this.
• Ensure you have enough native tokens from that network to pay for gas.
• Ensure you are using the latest version of the app or the extension.