I was trying to use this code from GiveWP for an extra field but I am getting an error message:Exception thrown without a stack frame. Here’s the code I used but of course I changed the title, placeholder, and text:

    $group->append(
        give_field( 'text', 'mothersName' )
            ->showInReceipt()
            ->minLength(2)
            ->label( __( 'Mother\'s Name' )
            ->maxLength(30)
            ->placeholder('Mother\'s name')
            ->required() // Could instead be marked as readOnly() (optional)
            ->helpText( __( 'This is a field used to add your mother\'s name' ) ) //how this is displayed is up to the template, but if the template has help text displayed, this is how to set it.
    );
});```

I have tried and disable plugins but still hasn't worked.