While using multi-auth in laravel its throwing error in vendor folder Gaurd.php not found

FatalErrorException in \vendor\sarav\laravel-multiauth\src\Guard.php line 11: Class 'Illuminate\Auth\Guard' not found

I am using sarav multi-auth library. I have 2 seperate tables for each auth. Followed all the instructions as mentioned in this link http://ift.tt/1rwqtrf.

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