Yii2 — MemCache. The problem with the inclusion?

I have a problem with using MemCache.
I'm developing a website on Yii2, server OpenServer. OS - Windows 10.
Once turned on MemCache:
'cache' => [
 'class' => 'yii\caching\MemCache',
 'useMemcached' => true,

And OpenServer -> settings -> Modules I have included.
But is issued here such error:
"Requires the PHP MemCache memcached extension to be loaded."
And I don't know what to do, please tell me. For the past two weeks)
June 14th 19 at 19:01

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