array_rand(): Argument #1 ($array) must be of type array, null given (View: platform/plugins/captcha/resources/views/forms/fields/math-captcha.blade.php) (View: platform/plugins/captcha/resources/views/forms/fields/math-captcha.blade.php) (View: platform/plugins/captcha/resources/views/forms/fields/math-captcha.blade.php)