@splendidkeen upload to this path /uploads/partners/logos/ from storage path open for reading and writing that file, here you go http://php.net/manual/en/function.fopen.php

It should be double checked before uploading it. If you are managing profile as a company then it will be better to put your image clearly displaying custom business logo of your company.

I agree with Andrea Jones that double-check your company's custom logo design before uploading it.