Edit functionality for comments on frontend for an admin user is not working

after login as an admin and reach on frontend for a post there is edit button for each comment but when admin click on that it do nothing. So I have checked the console and found there is error:- can not attach addEventListner on undefined, I have attach the screen shot where it is happening, it is happening with editForm variable where we are passing into function with 0 index which is a undefined value. 

url for comments page:-  http://staging.programs.marieforleo.com/lesson/follow-through-formula-introduction/

you need to be login before reaching to this page, I can email the login detail if needed to look on it.
plugin version:- 4.0.14
wordpress version:- 4.8.2

we also have paid addons with this:-
comment user info
comment search
comment user and comment mentioning.