Warning: require_once(/home/mysite/public_html/wp/wp-load.php)

Hello sir u have not define which version u have use so this file

Replace whole code with or check with code.
wp-blog-header.php (4.2.4)

<?php
/**
 * Loads the WordPress environment and template.
 *
 * @package WordPress
 */

if ( !isset($wp_did_header) ) {

	$wp_did_header = true;

	require_once( dirname(__FILE__) . '/wp-load.php' );

	wp();

	require_once( ABSPATH . WPINC . '/template-loader.php' );

}

The code of my wp-blog-header.php is exactly like this.

<?php
/**
* Loads the WordPress environment and template.
*
* @package WordPress
*/

if ( !isset($wp_did_header) ) {

$wp_did_header = true;

require_once( dirname(__FILE__) . ‘/wp-load.php’ );

wp();

require_once( ABSPATH . WPINC . ‘/template-loader.php’ );

}

I cant remember the version of WP installed, is there any way to see that without enter in admin panel (because I can,t)?

wp Root directory on with readme.html there 10 to 12 lines on h1 tag in write current version u have check there.

Make valid permisson for wp.

Thank you.
Version 4.2.2

My website is ok now. My hosting company solves the issue, they say it was a malware incident. Thanks.