Yii2 after installing phpmailer throws ReflectionException, why?

After installing phpmailer to Yii 2 using composer, procurement application started to give error: 53aeba76eaf6458db22b6af68b02fc8e.JPG
Can you help?
July 8th 19 at 16:19
1 answer
July 8th 19 at 16:21
It is written that you have no class.
So somewhere does not fulfill autoloader, or from the vendor was deleted the class(package, module.)

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