Invalid CSRF token when submitting a form

Hey guys,

I am really hoping you can help me get to the bottom of this, I have messed around with CI before but this is the first time I am actually trying to build a site with it. I have had some teething issues but have been able to find solutions to them but this one really has me stumped.

I am trying to add a form to a page (search bar) and have been getting various errors, the latest one is:

Invalid CSRF token.

this occurs when you try and submit the form, i have tried multiple 'fixes' via googling but nothing seems to do the trick my latest code is:

head.php - header of the site loading the search bar into the top of each page

Code:

   <!-- Start Searchbox -->
   <form class="searchform" method="POST" action="<?php echo site_url('stock/search');?>">
     <input type="text" class="searchbox" id="searchbox" name="searchTerm" placeholder="Search">
     <span class="searchbutton"><i class="fa fa-search"></i></span>
     <input type="hidden" name="<?php echo $this->security->get_csrf_token_name();?>" value="<?php echo $this->security->get_csrf_hash();?>">

   </form>





   <!-- End Searchbox -->

config.php

Code:

*/
$config['csrf_protection'] = TRUE;
$config['csrf_token_name'] = 'MLLTokenName';
$config['csrf_cookie_name'] = 'MLLCookieName';
$config['csrf_expire'] = 7200;
$config['csrf_regenerate'] = FALSE;
$config['csrf_exclude_uris'] = array();

/*

I am really hoping I have done something simple & obviously wrong because it can't be this hard to insert a simple form into a CI page & i am just starting to get to grips with CI so its frustrating to be stuck on something like this. 


Thank you for any help with this

all the best

Alex3410