如何在打开某些网址时设置它不被wordpress处理

i have 2 system in one hosting

  1. i build using wordpress for landing page
  2. the system i build using codeigneter

the problem is in the codeigniter system, i have a example (transactions page), if i access the transactions page error like this :

DataTables warning: table id=transactions - Ajax error. For more information about this error, please see http://datatables.net/tn/7

i check the error in inspect element (i'm using google chrome) : "Failed to load resource: the server responded with a status of 404 (Not Found)" i try to open the url redirect to wordpress.

my question is :

  1. how to prevent/disable wordpress can not access or process the url?

this my htaccess on wordpress :

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

Thanks in advance