After yum update you get an rrror on web interface:

XHR response code: 200 XHR responseText: undefined jQuery status: parsererror

Check and see how session is owned by:

[root@localhost ~]# ll /var/lib/php/
total 8
drwxrwx--- 2 root apache 4096 Jun 27 11:29 session


This need to be owned by asterisk not root:

[root@localhost ~]# chown -R asterisk. /var/lib/php/session

Confirm it's owned by asterisk now:

[root@localhost ~]# ll /var/lib/php/
total 8
drwxrwx--- 2 asterisk asterisk 4096 Jun 27 11:29 session

You need to restart Apache for it to take effect:

[root@localhost ~]# /etc/init.d/httpd restart
Stopping httpd:                                            [  OK  ]
Starting httpd:                                            [  OK  ]
[root@localhost ~]#

Try it now.