How to fix: Yii2 UrlManager - /models route returns 301Moved Permanently?

Question

URL Handling

The rule 'models' => 'my-controller/my-action' was created in the application router (UrlManager)
When a request is sent via Postman, the response is
301 Moved Permanently
We are sorry, but the Chrome API does not allow to get a response body for redirect.
When you click on the corresponding url in the browser
404.
If you specify a different parameter in the rule, then the request is processed. For example,
'modelsss' => 'my-controller/my-action'
works.
Can someone tell me how to make this route work?