Hi @VAgarwal26_eClerx
This looks like issues about content security policy.
A Content Security Policy (CSP) is an HTTP header and security feature that gives browsers control over what type of resources are loaded on a Web page.
In your case, you need to add .demdex.net domain and other domains or URLs to your CSP header to functioning. if you're not able to do then you need ask your development team and they can able to do it for you.
Here is more reference about what CSP is and how it works.
Configuring a CSP
Hope this helps.