After a small modification on my website - I didn't knew that i should have disabled the plug-in to do this because so far it worked well without -
So , I can no longer access my administration area of wordpress and the following message appears:
Fatal error: Call to undefined function is_network_admin() in /homepages/18/d316832517/htdocs/viamalaura/wp-admin/includes/menu.php on line 10
Could someone help me to solve this problem?
Thanks in advance