Aha, would probably help if I put use Carbon\Carbon at the top of my artisan class. Fixed.

Put

use Carbon/Carbon 

at the top of the file might work.

And, as you probably know, you can just do \Carbon\Carbon::method() in your class without aliasing the namespace at the top.

Or add to aliases: 'Carbon' => 'Carbon\Carbon', so you can use it everywhere

I added carbon Facade as "use Carbon/Carbon" and also pass it with aliases but doesn't work yet.

return view('web.home',array('titles'=>$titles,'declarations'=>$declarations,'Carbon' => 'Carbon\Carbon'));

in view i used carbon as below:

Carbon::now()->subSeconds($declaration->created_at)->diffForHumans()