(Web Automation) Embedded Acrobat DC item in web page

I am trying to check whether element present in window using “WebAutomation.WebPageContainsElement BrowserInstance:Browser Control:”
but I am getting error as mentioned below:
In order to perform this operation the Web Browser must be displaying an HTML page. (The type of the current page is: ‘adobe acrobat dc browser control implementation’)
Please guide me to resolve this issue?

Admin note: @supriya.shelke please always use descriptive titles for your topics (web automation is not a descriptive title)

The error message is pretty explanatory to be honest.
You are trying to retrieve/manipulate/find an element from a page which is not in HTML.
The page you are trying to manipulate with your Robin script is probable an embedded page generated from Adobe Acrobat DC (embedded pdf maybe?).

Best regards,
J.