Help to generate reports on LibreNMS - Centos 7

Dear guys,

I am trying to generate a report on my interface WAN and the Libre system is not responding my requests, when I choose the date and time and press update Ex: (From 2017-05-11 08:45 to 2017-05-21 17:45) the system just update the page and turn back for the current date, Do you have an idea what could be?