Module in yii 2?

Question

Yii

I'm trying to make my own module in yii 2. I put it in vendor. I also generate a model and crud there. but the site says there is no such page. what could be the trick

'modules' => [
        'main' => [
            'class' => 'vendor\my\main',
        ],

Answer 1

in general, the module had to be added not to the vendor, but to the frontend. the cant was in the yiiframework.ru/forum/viewtopic.php?f=19&t=31102
urlmanager
For example, to make the module available in the frontend, you need to add a new rule in the settings.
Example:
'<_m>/<_c>/<_a>' => '<_m>/<_c>/<_a>'

Answer 2

registered namespace?
show error

Answer 3

did you add it to the composer?