My NagiosXI interface is having trouble showing performance graphs...
When i try by the service detail and the page load the graph with the default timeframe (defined in /usr/local/nagiosxi/html/includes/components/xicore/status-object-detail.inc.php), the graph shows (image below)!

But, when the auto-refresh (defined in the performance settings) reload the page or i choose another timeframe in the box (for example, change the 30 days to 4 hours), the graph doesn't show up.


The data is there, because when i change the default in .php file, loads the graph ok (with any timeframe)... Only with the auto-refresh or trying to change the timeframe in the box crashes the graph.
Has anyone ever experienced this?
Server info:
[root@gvtsvpx-ngxi01 nagiosxi]# uname -a
Linux gvtsvpx-ngxi01 2.6.32-358.2.1.el6.x86_64 #1 SMP Wed Mar 13 00:26:49 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
[root@gvtsvpx-ngxi01 nagiosxi]# cat /etc/*release*
CentOS release 6.4 (Final)
CentOS release 6.4 (Final)
CentOS release 6.4 (Final)
cpe:/o:centos:linux:6:GA
VM - Got from nagios website
Version: Nagios XI 2014R2.6