Receiving Warnings When Logging and Out

Hello,

I receive the following errors when logging in or out. What do these warnings mean?

Logging in:

expects parameter 1 to be a valid callback, function ‘spa_dashboard_addon_news_setup’ not found or invalid function name in /home/customer/www/bassinonabudget.com/public_html/wp-includes/class-wp-hook.php on line 292

Logging out:

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘sp_track_logout’ not found or invalid function name in /home/customer/www/bassinonabudget.com/public_html/wp-includes/class-wp-hook.php on line 292