flutter Unhandled Exception: type '() => Null' is not a subtype of type '(void) => dynamic' of 'f'

Author: Publish Time: 2024.07.26 06:26:11

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[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: type '() => Null' is not a subtype of type '(void) => dynamic' of 'f'

that is very interesting error,

_verificationCodeController.text =

_formData['email_verification_code'] ;

for the formData['email_verification_code'] is Null

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