[4.x]: Headers link is showing duplicate language path in URL .../en-us/en-us/...

[mateostabio]

What happened?

Description

My client noticed in their SEO Ahrefs Report that the site is having loads of errors on the other language sites as it shows 404 error pages as the response headers link. Here's an example:

On this blog post:
https://clearestate.ddev.site/en-us/blog/how-to-become-an-executor-of-an-estate-without-a-will

The response header Link shown is this:
https://clearestate.ddev.site/en-us/en-us/blog/how-to-become-an-executor-of-an-estate-without-a-will; rel="canonical"

I see the response header link as duplicate on my local ddev and on the production site.

Steps to reproduce

This started happening after performing an update 2 months ago from CraftCMS v4.6.1 to v4.9.4

Canonical is correct in the HTML:

Craft CMS version

4.9.4

PHP version

No response

Operating system and version

No response

Database type and version

No response

Image driver and version

No response

Installed plugins and versions

"vlucas/phpdotenv": "^2.4.0",
"verbb/super-table": "^3.0.7",
"craftcms/redactor": "3.0.4",
"craftcms/aws-s3": "^2.0.3",
"sebastianlenz/linkfield": "2.1.5",
"ether/seo": "^v4.0.3",
"vaersaagod/geomate": "^2.1.0",
"born05/craft-twofactorauthentication": "^3.0.1",
"vlucas/phpdotenv": "^5.4.0",
"ether/logs": "4.0.0"

[mmikkel]

@mateostabio Craft doesn't add any "Link" response headers. I'm pretty sure this is a problem with the Ether SEO plugin: ethercreative/seo#469

[mateostabio]

@mmikkel Thank you!!!