A RecaptchaV2Controller was used after being disposed. Once you called dispose() on a RecaptchaV2Controller, it can no longer be used

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I've experiencing a problem. When RecaptchaV2Controller was reused, error will occure. A RecaptchaV2Controller was used after being disposed. Once you called dispose() on a RecaptchaV2Controller, it can no longer be used

In my scenario,

1. User fill out form to create account. When user tap Register button, it will show Recaptcha.
2. If success it will trigger the register function.
3. But if account already exist, it won't proceed to another screen, instead it will stay on the form screen.
4. Then user change the email straight away, and proceed to tap Register button.
5. Then the error appear (While it should show Recaptcha procedure again).

How to fix it?