Hello everyone,I've a little problem with my new osticket installation. At the start, I has install for my tests osticket on a Debian 8 with Apache2.4, PHP5.6 and MySQL5.5. As result of my tests, I see no problem (Statistics graphs works).At the osticket installation on the production server (It's the same configuration as the first installation), my statistics graphs doen'st work. To install osticket on the production server, I've copied de the osticket directory and database of the test server at the production server.Since this installation, we have created 2 or 3 tickets et closed 1.But my graphs show only one date on the X-axis axe et NaN on Y-axis (screenshot on attached file).Have you got any idea to resolv this problem ?