GSC - Duplicate, submitted URL not selected as canonical

I have a some pages in GSC that are showing "Duplicate, submitted URL not selected as canonical". All of these URLS are the non www version of my site.

Taking a look at the user selected canonical, they are the right ones (the https www version of my ssite)

Taking a look at Google selected canonical, they are the user selected ones.

Does it matter that these are showing in GSC if they Google sees the canonical as the right links?

Also a little confused as to where Google is picking up these non www versions of my site. Could it be internal links, back links etc?

I've searched through the forms and read a lot on Duplicate, submitted URL not selected as canonical specifically but couldnt find anything directly related to my scenario.

Do you have correct redirects from non-www to www?

Ahah, life saver. I had a feeling it woudl be something so simple thank you! Will revalidate and check back in with progress. Thank you!

Thank you for sharing an useful post.

sometimes it checks both versions www and non www by itself.

as long as you htaccess redirect to the version you want you should be fine.