null check error
Also written: Null check operator used on a null value
The error `Null check operator used on a null value`, raised when code uses `!` on a value that is `null`. For example `currentState!` fails if the Form isn't using the key.
Also written: Null check operator used on a null value
The error `Null check operator used on a null value`, raised when code uses `!` on a value that is `null`. For example `currentState!` fails if the Form isn't using the key.