UBUNTU 16.04.03 LTS WIFI connection working but No Internet (i-Mac )

Hi I have the same problem (Ubuntu 16.04 on MAC)
THe Wired connection works but the WIFI dose not get to Internet

here is the link at the WIFI-Info Script execution log http://paste.ubuntu.com/25898728/
Ping either does not work or works randomly and very slowly



thanks for helping me