Ci 3.0.6 error at Font-Awesome

I used Ci3.0.0 to deploy my CMS web, Ci3.0.0 is very well for my all work, but i have an error when i updating Ci3.0.0 to Ci3.0.6    ( update by copy the system folder in Ci3.0.6 and paste to my project folder )

I cannot use font-awaresome anymore with the error show in this image, please help ! 
i tried many ways but the error still there
now i down grade to ci3.0.0 to solve the error

Please help me ! plese show me how to fix this ! 


(i am vietnamese)

I*'ll bet if you load Font-Awesome from your assets folder it will work.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

i loaded fonts in my assets folder on my hard-drive, it was very good in Ci3.0.0 

when i used Ci3.0.0 to render my CMS 
 

Hi,

As of CI V.3.0.2 (Or 3.0.3) you must set a value for $config['base_url'] in /application/config/config.php to fix this issue.
Look in the change log of the manual and the forum for exact detail on the behaviour change.