Admin edit comment tab is not working

My comments tab has ceased working. I have googled the question ad nauseum with no luck. If there is a comment in moderation and I click that it will open the “edit-comments.php”. If I click on the comment tab or the link on the admin bar I get this error message:

“Example Domain

This domain is established to be used for illustrative examples in documents. You may use this domain in examples without prior coordination or asking for permission.

More information…”

Can anyone help?