While opening the html module content in chrome browser it is throwing the Deny message in the page.

While updating the HTML content the process is stopping in the middle and the browser console window showing the following error message.

Uncaught Sys.WebForms.PageRequestManagerParserErrorException: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Details: Error parsing near 'Denied'.

Same type of error is coming in some pages in the DNN Site.

How could we solve this issue.