404 page errors while using catalog created from FB sales channel setup

[Saiganesh]

Hi,

I have created a catalog after connecting FB Business manager with Shopify FB sales channel.

FB and Insta ads that were using catalog worked fine for a week. After this it resulted in 404 error pages for most of the clicks while clicking these ads. I had confirmed this from google analytics by checking the UTM parameters.

The catalog is not showing any errors in commerce manager.

Let me know how to fix this.