How to Render Browser Authentication Popup

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Hey,

Can anyone provide me with the solution on how to implement Browser Authentication POPUP in Frontity. As I am unable to find any proper solution. Since it is Browser Authentication POPUP works properly in WORDPRESS SITE. In Frontity not getting a proper answer. Kindly help anyone who knows.

Reference Url added so what is needed.

https://www.google.com/search?q=browser+authentication+popup+in+frontity+project&rlz=1C1UEAD_enIN966IN966&sxsrf=AOaemvJUqafC8fzTFdU4qooDP4-ehcR3lw:1637818309752&source=lnms&tbm=isch&sa=X&sqi=2&ved=2ahUKEwiporzU5LL0AhVVqJUCHXhkBdYQ_AUoAXoECAEQAw&biw=1396&bih=678&dpr=1.38#imgrc=MeQhnCxetCaJAM