When I run 

```
php bin/magento setup:di:compile

```

I get an error with one of my theme's extensions: 

> 
> Fatal error: Class 'Hybrid\_Provider\_Model\_OAuth2' not found in
>  /var/www/html/app/code/MageBig/SocialLogin/Model/Providers/Amazon.php
>  on line 26
> 
> 
>