POST 500 internal server error?

I just build simple infinite loop for my WordPress blog. Its working great on LOCAL PC (WAMP), But its not showing any output on online website. I tried to debug it using FIREBUG. On the console i am getting this error

POST http:// www. siteurl. com/infinite-loop.php 500 Internal Server Error​

I am running my blog on nginx server. here is the code I am using...

infinite-loop.php

<?php

$infinite_loop= $_POST['pcount'];?>

<?php require_once("/wp-blog-header.php");?>

<divclass="x-container-fluid max width main">
<divclass="offset cf">
<div class="<?php x_main_content_class();?>" role="main">
<?php global $wpdb;
$args = array('posts_per_page'=>10,'order'=>'DESC','offset'=>$infinite_loop );
$myposts = get_posts( $args );foreach( $myposts as $post ): setup_postdata( $post ); ?>
<article id="post-<?php the_ID();?>" <?php post_class();?>>​

<div>
<divstyle="width:300px;float:left;">
<?php x_ethos_featured_index();?>
</div>
<divstyle="width:500px;float:right;">
<?php /* print $args['offset']; */?>
<?php x_get_view('ethos','_content','post-header');?>
<?php x_get_view('global','_content');?>
</div></div></article>
<?php endforeach;
wp_reset_postdata();?>
</div><?php get_sidebar(); ?>
</div>
</div>

​

AJAX IN THEME HEADER

<script>
$(document).ready(function(){

var post_page_count =10;var height_scroll =400;
$(window).scroll(function(){

if($('body').height()<=($(window).height()+ $(window).scrollTop())){
post_page_count = post_page_count+10;

$.ajax({
type:"POST",
async:false,
url:"theme/infinite_loop.php",
data:{pcount: post_page_count},
success:function(result){


$("#gizinfi").append(result);
}
});
};
});
});
</script>
​

Please help me to find out the solution. If you know anything please help me...

​

 

You need to find an error. Do you have an access to the server logs? (maybe in the hosting control panel)

 

Yup I have access to the server log, but i haven't found anything there...

 

What control panel you are using for the hosting?

 

I am Using WebMin...
I have found that i am getting this error if I used wordpress code


This that code which is actually responsible for the error:

<?php require('/home/gizmoids/public_html/wp-blog-header.php'); ?>

<?php

global $post;
$count_posts = wp_count_posts();
$published_posts = $count_posts->publish;
$args = array('numberposts' =>$published_posts);
$myposts = get_posts($args );
foreach( $myposts as $post ) :
setup_postdata($post); ?>

<?php echo get_permalink(); ?>

<?php echo $queryrows; ?>



<?php endforeach; ?>​

That code gives me right output but still showing the error of 404...
Means if this code is in my listtitle.php then in the console its showing
"NetworkError: 404 Not Found - http:// mywebsite . c0m/listtitle.php"

Why? I am getting stuck on this

 

You need to find an error logs. Can you check log file /var/log/httpd/error.log ?

 

I found the solution

Thank you for the reply OlgaSeCom
http://stackoverflow.com/questions/28772374/ajax-post-500-internal-server-error