Inserting into Template

I am trying to set the Kudos functions into the template (content-post.php starting on line 66) but am getting the following error message.

Warning: extract() expects parameter 1 to be array, null given in /nfs/c09/h02/mnt/135756/domains/critconfirm.com/html/wp-content/plugins/kudos/php/functions.php on line 70

Any help resolving this is appreciated.

https://ww.wp.xz.cn/plugins/kudos/