magento2 – compile returns error with theme extension

When I run

Configuration of php bin / magento: di: compile

I get an error with one of the extensions of my theme:

Fatal error: class & # 39; Hybrid_Provider_Model_OAuth2 & # 39; It is not found in
/var/www/html/app/code/MageBig/SocialLogin/Model/Providers/Amazon.php
on line 26