When you show a web page it’s embedded within an html iframe. The web page owner can control who can and can’t embed it using two common methods. First is the x-frame options http response header and the second is the content security policy frame ancestors directive.
If you own the web page follow these articles from Mozilla to whitelist *.risevision.com
If you don't own the web page contact the owner of the web page and request that the iframe restriction be removed. Alternatively you can request that *.risevision.com be added to their web page’s whitelist for embedding.