Error Message when Someone submits comments

Hi there,

Many people have told me that every time they submit a comment on my blog, they receive one of two errors.

The first is that even when they put in a url for the website, WordPress tells them they have not and requires them to fill in the website (even though that’s already been done).

Two) Every time someone submits a comment, they receive the following message:
Warning: Missing argument 2 for Endurance_Page_Cache::comment(), called in /home1/svadorec/public_html/wp-includes/class-wp-hook.php on line 300 and defined in /home1/svadorec/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 167

Warning: Cannot modify header information -headers already sent by (output started at /home1/svadorec/public_html/wp-content/mu-plugins/endurance-page-cache.php:167) in /home1/svadorec/public_html/wp-content/plugins/jetpack/modules/subscriptions.php on line 722

Warning: annot modify header information -headers already sent by (output started at /home1/svadorec/public_html/wp-content/mu-plugins/endurance-page-cahce.php:167) in /home1/svadorec/public_html/wp-… etc.

I still receive the comment, but many of my users don’t know if it’s gone through. Can someone help? Thanks!