Administrative priviliges issue (URGENT)

I got the same message but, I did change permissions, and nothing. http://www.perigeotravel.com

Thanks.

Nop, I just move from localhost to web server. I did the next stepts:
-Deactivate Plug-ins.
-Optimize and download sql file.
-Change route and domain inside the database (.sql file).
-Compress the site in zip and upload the zip in to the hosting.
-Restore sql file in hosting.
-Uncompress the zip file at the server.
-Replace wp-config.php
-Delete zip file.

I can’t even get inside to wp-admin

What can it be?

Issue is something to do with WP_DIE function on line 3 of ‘functions_libraray.php’ in the Core>Functions directory.

Change this:

function checkauthority(){
if (!current_user_can('edit_themes'))
wp_die('Sorry, but you don’t have the administrative privileges needed to do this.');
}

To this:

function checkauthority(){
if (!current_user_can('edit_themes'))
;
}

😉