New reasons prevent pages from being indexed - Google

There was an email from Google search regarding another blog on blogger - which has a url ending with blogspot.com - about some pages not being indexed:

Search Console has identified that some pages on your site are not being indexed due to the following new reason: Alternative page with proper canonical tag

According to this blogger support page, 

https://support.google.com/blogger/thread/207060056/how-can-i-fix-blogger-alternate-page-with-proper-canonical-tag-error?hl=en

"So there is nothing you need to do."

The m=1 page (mobile page) was not being indexed, but the non-mobile page was being indexed. That's fine, so no action needed.