<br />
<b>Fatal error</b>:  Uncaught Error: Undefined constant &quot;no&quot; in /home1/newplsong/public_html/zbxe/modules/referer/referer.model.php:204
Stack trace:
#0 /home1/newplsong/public_html/zbxe/modules/referer/referer.controller.php(35): refererModel-&gt;isBot('Mozilla/5.0 App...')
#1 /home1/newplsong/public_html/zbxe/addons/referer/referer.addon.php(24): refererController-&gt;procRefererExecute()
#2 /home1/newplsong/public_html/zbxe/files/cache/addons/0pc.acivated_addons.cache.php(214): include('/home1/newplson...')
#3 /home1/newplsong/public_html/zbxe/classes/module/ModuleHandler.class.php(115): include('/home1/newplson...')
#4 /home1/newplsong/public_html/zbxe/index.php(88): ModuleHandler-&gt;__construct()
#5 {main}
  thrown in <b>/home1/newplsong/public_html/zbxe/modules/referer/referer.model.php</b> on line <b>204</b><br />