No data in Statistics pages

This applies since MOR X7.

Run following commands to fix it:

service elasticsearch restart
elasticsearch resync

ES (ElasticSearch) is a tool that we use to show statistics in MOR.
ES Sync Status shows how accurate is ES data compared to MySQL data.
ES periodically fetches data from MySQL.
Since this action is not in real time, some miss match is possible when you have active calls.
This miss match should be only noticeable when checking newest calls.
Eventually all calls should be synchronized between ES and MySQL. Small percentage miss match is normal.