I get 404 not found but the file exists

and the hello>index.php file just displayes hello world

“For example, if the controller class is PostController, the directory would be @app/views/post; if it is PostCommentController, the directory would be @app/views/post-comment


“By default, controller IDs should contain these characters only: English letters in lower case, digits, underscores, hyphens, and forward slashes”


From your screenshot,

I think your views folder is typo,
All the letters should be lowercase, such as


still get 404 not found