I really like the new blade concept, but was/still am running into some unexpected issues.

First I was getting the Undefined variable: when using props. That I fixed by fallowing @yxj0312 feedback and upgrading composer update facade/ignition --lock
then I discovered that, if I create a component with controller, I am not able to pass-in variables/props into <x-component/>. For example, I was trying to create a Countries dropdown component, with controller, so the controller can do the data (country) querying, but in the form I still want pass in a country_id when in edit form.
So decided to use a anonymous component, without controller, and query the countries inside the component. Then the next issue, I am running into is, naming. So I deleted previously created component and controller, but now I do want to use the same name for my anonymous component, after I renamed it I am getting include(E:\wamp64\www\my_app\vendor\composer/../../app/View/Components/CountryDropdown.php): failed to open stream: No such file or directory
hmm...., there is something about naming the components and changing (adding/removing controller) for the component later. So, I was fallowing @jeffreyway anonymous flash component creation. Later I decided to recreate it with controller, I simply deleted it and recreated it with php artisan make:component Flash command. After that when I added a public $message property in the controller, I got another Undefined variable {{ $message }} inside the component.

Flash Component