Please see your link. You have one link. But in that link see first part (/home/xxxxx). You have added ONLY THIS PART (not full link) twice. which invalided your link. Remove 1 part of this from your link.
How can I change the required number of characters in the “subject” [5 minimum required characters by current default setting] and “message” [10 minimum required characters by current default setting] text field/text area when a user communicates with another user?