Google is complaining that my site is having "Duplicate without user-selected canonical" for multiple pages.

I found this issue from 2018 but that doesn't seem to apply to the current version.

Any suggestions on how to solve this? Page that it complaining about are for example

http://domain.com/2025/04/default http://domain.com/post/2025/04/01/remove-the-meta-ai-icon-from-whatsapp-(by-returning-to-a-previous-version) https://domain.com/contact.aspx http://domain.com/post/2025/02/14/http-error-500-19-and-error-code-0x80070021 http://domain.com/2025/02/default

Strange is also that it seems to mainly refer to http URL's which I am not serving.