Just figure out that I am in debug mode
check wp-config.php and look at
define(‘WP_DEBUG’, true);
Set it to false and the problem with be hidden untill someone clever fixes
Yes, I am getting the same error I’m not keen to re-download theme and rebuild, suggestion on other sites is below, though I dont think my site is in debug mode
If you do not set the id argument value, you will get E_USER_NOTICE messages in debug mode, starting with version 4.2.
So if you did not have id in your functions.php while using register_sidebar() function, and you updated to wp 4.2, you’ll get this notice (in debug mode).
Just add a counter $i, and when going through your sidebars, increase i by 1 ($i++) and add
‘id’ => ‘sidebar-‘.$i,
in your register_sidebar() function.
Ok thanks, figured it out its a plugin in that creates memory problems when I change the language