Why is popup form not working in Yii2?

Question

Yii

an example of the form
At me writes that does not see representation.
I connected everything as in the article.
use app\components\FBFWidget; - here it writes an indefinite namespace


config

tried to register like this (does not see):

'fbfWidget' => [
            'class' => 'app\components\FBFWidget',
        ],

Answer 1

Good morning.
Try to rewrite file paths, clear runtime/cache.

Answer 2

it is not necessary to use namespace and use for classes lying on the same level - this is about the first screenshot.
Regarding the second one with app/components/FBFWidget:
you definitely shouldn't touch the config. I would rewrite the file name, namespace name and class name. There, a Russian letter could corny get in somewhere. Well, check that the components folder really exists, check the s at the end too, I came across this a couple of times.