a php error

[Alljordan.Net]

At the top of my site , there is a php error

URI: index.php
Path: /includes/Core/elxis.php
Line: 3160
ob_start() [ref.outcontrol]: output handler 'ob_gzhandler' cannot be used after 'URL-Rewriter'

What is the reason of such error and how can I correct it ?

[datahell]

Disable gzip in Elxis global configuration