Page number at the end in all our products listings.

Hello, We have a opencart Version 3.0.3.8
We have strange issue and unbale to find why this is happening. And dont know how to fix this.

The issue is google says we have page number in all our products listings.
Example below link I have this extension installed
https://www.opencart.com/index.php?rout ... n_id=16713
But when I contact them, they said they also unbale to figure it out ?

So google trying to index them all and since those are duplicate pages it reports them as issues. Can you pls tell me how to fix it ?

Your canonical link on that page is wrong in that it includes the page parameter when is shouldn't. Default OpenCart doesn't do that so it is caused by one one of your extensions.

You could also inspect the URLs in the Google Search Console and see what the referring page is.