Chain namespace is not supporyed

[trung0123]

SDK Affected

AppKit

Describe the bug
I change the custom network OPBNB_TESTNET and get error "Chain namespace is not supported". Can you help me fix the above error?

A clear and concise description of what the bug is.

To Reproduce

Steps to reproduce the behavior:

1. Connect metamask
2. Choose network Ethereum
3. Connect success with network Ethereum
4. Change network OPBNB_TESTNET
5. Show dialog error as image attached
6. See error

Screenshots

If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device: Pixel 5a
• OS: Android
• Version 34

[linear]

WK-486 Chain namespace is not supporyed

[quetool]

Hello, have you added the network to ReownAppKitModalNetworks list? https://docs.reown.com/appkit/flutter/core/custom-chains