"use" statement conflicts with another class in this namespace. Consider defining an alias

1

We use scrutinizer to inspect our code. And here is couple conflicts in bootstrap file for:

use Cake\Cache\Cache;
use Cake\Core\App;
use Cake\Event\Event;
use Cake\Log\Log;
use Cake\Utility\Security;

Reporting:

This use statement conflicts with another class in this namespace, Cache. Consider defining an alias.

Any have idea what produce this conflict ?