Hey guys!

So recently we had this error pop up on our website, we believe we have narrowed it down to a theme problem. Has anyone else had this issue? If so how did you resolve it?

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘arphabet_widgets_init’ not found or invalid function name in /home/serveit8/public_html/clients/z-clients/livingfaith/wp-includes/class-wp-hook.php on line 286

We have deactivated all plugins and restored older theme backups to no avail.

Hey there

Not sure if this is a theme related,

  1. deactivate all third party plugins and try again your problem, most probably this I conflict with third-party plugins.
    Once you deactivate all plugins please check your problem again, if the problem is gone then this means it was a plugin conflict. Now, start activating plugins one by one and same time repeat your problem until your problem appears again, now you know which plugin was in conflict
  2. update everything - plugins, theme, WordPress and check again
  3. switch to default wp theme and check again if you see the same problem

Colorlib Support Team