Rating: 2 stars

Hello, my error is:
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'sm_options_page_help_tabs' not found or invalid function name in /home/users/wm-marsa/public_html/wm-marsa.pl/wp-includes/plugin.php on line 525
Why is Compatible with User Role Editor and no other plugin like it?

Best regards