Without changing anything getting Errors now…help please

I have the new Vantage theme in WordPress and I use Visual Editor to update my webpage. This is a page I was updating and I continue to get errors that I don’t know how to handle. Any help would be SO appreciated.

the site itself seems to be functioning fine…but here is the page I was aiming to update:
https://www.poundsofpregnancy.com/indoor_cycling_playlists/music-for-cyclists-and-working-out

ERRORS:

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘wp_statistics_shortcake’ was given in /home/content/c/a/s/cassidy16f/html/wp-includes/plugin.php on line 496

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘wp_statistics_shortcake’ was given in /home/content/c/a/s/cassidy16f/html/wp-includes/plugin.php on line 496

Warning: Cannot modify header information – headers already sent by (output started at /home/content/c/a/s/cassidy16f/html/wp-includes/plugin.php:496) in /home/content/c/a/s/cassidy16f/html/wp-admin/post.php on line 235

Warning: Cannot modify header information – headers already sent by (output started at /home/content/c/a/s/cassidy16f/html/wp-includes/plugin.php:496) in /home/content/c/a/s/cassidy16f/html/wp-includes/pluggable.php on line 1196