WordPress 3.8 upgrade issue
I’ve just upgraded my site to 3.8 and I’ve gotten an error message on my dashboard:
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘wp_admin_bar_sidebar_toggle’ not found or invalid function name in (…)/public_html/wp-includes/plugin.php on line 507
The site appears to be working fine but I’d still like to know what to do about this warning.
Any advice would be greatly appreciated =)
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