AEM6.5 Personalization : 403 Error for matched experience having duplicate .default.html extension

[gwadhwa]

We are trying to leverage aem personalization for content targeting using contexthub targeting engine

On authoring its working fine but on publish site I'm getting 403 error due to wrong path to target experience. 

Wrong path  : https://www.samplesite.ca/en/personalization-page/_jcr_content/root/responsivegrid/banner.html.defau...

Should be  : https://www.samplesite.ca/en/personalization-page/_jcr_content/root/responsivegrid/banner.default.ht...

Does anyone know any possible root cause or faces similar issue in past? Let me know if you need any further information. 

[Shubham_borole · Accepted solution]

403 error is usually for access issues. Can you confirm if the user is logged in as admin even in that scenario this error is seen?

Also we need to check everyone user's permissions.

Looking at the placement of html in wrong path (The selector is added after forming the html based url)), can you check if you have any custom code that adds a .html to a resource path. Can't recall any ootb service that does this. May be link externalizer.