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

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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.