Hi There,
Thanks in Advance, I have created a web pages for knowledge base articles and it filters based on the subject name, but when i tried to add the subject name to filter up the articles, it is showing an error. Its a P1 Issue, needs to solve asap. Any suggestions please.
The page which i have created to filter up the subjects.

and while adding the subject name am getting below error.

error am getting while saved the page.

Regards,
Pradeep