Blade view not found on Laravel 8

[phongtnit]

Hi,

I using Laravel 8.12, and I created 'simple' theme. I accessed welcome default page and the result is View [welcome] not found, the error screen was
Error page

My project structure:
Structure project

Please help me to fix it, many thanks

[phongtnit]

Sorry, I don't set active theme in middleware or route. It fixed,