Error user_func_array()

Hi

I have this error with your plugin :

Warning: call_user_func_array() expects parameter 1 to be a valid callback, class ‘Contact_List_Admin’ does not have a method ‘add_upgrade_link’ in C:\wamp64\www\WordPress_TEST\wp-includes\class-wp-hook.php on line 288

How fix this issue ?

thank you