[Plugin: GoCodes] Cannot Install

What error are you getting?

it says plugin cannot be found. Screenshot: https://goo.gl/BHyi8

I use WP version 4.3 after install it I got this message above my dashboard :

“The plugin generated 1061 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.”

Anything wrong? and what should I do? thanx.

Is this plugin working for anyone in WP 4.3.