Hi,
We had recently written a plugin for sending email. In the description of the email we were inserting the URL of the record
string recordUrl = string.Format(“<a href=’{0}/userdefined/edit.aspx?etc=4300&id={1}‘>Click here to open the record</a>”, this.serverName, marketingListGuid.ToString());
While clicking the link the record opens properly, however when we try closing the form’s window we get the below error

We have UR8 installed in our on premise development environment there we don’t get this error, however we are still getting the above error for our online dev and production environment.
Bye.





