Firebase Database connection was forcefully killed by the server. Will not attempt reconnect. Reason: Invalid appcheck token.- Flutter IOS app

I have used firebase realtime database in my flutter app. I am not able to login in my app, when i am running release build. It shows invalid app check token. While i can run it successfully in debug mode by following below link

App Check with the debug provider on Apple platforms

I have also followed below two links for app check

device check , app attest

Still i am getting invalid app check token for release build. Can anyone please tell me how to solve this error. Please check xcode screenshot.