Hi forum,
I have a problem and I'm clueless in regards of the fix method.
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'my_register_sidebars' not found or invalid function name in /home/content/07/11492407/html/wp-includes/plugin.php on line 429
site: http://nikolaitambovsky.com/contact-us/
Thanks for the help
