It looks the URL got dropped from your post, likely this one: https://www.cbc.ca/news/canada/edmonton/measles-outbreak-reported-in-northern-alberta-community-of-john-d-or-prairie-1.7480122
I've seen this a few times recently, and I think the 'create post' UI could be improved for new users, specifically around the image upload and thumbnail options. You can have either a link or an image, but not both, and the thumbnail is applied separately
What I like to do is
- paste in the link
- add the title (if it didn't autofill)
- copy a link to an image from the news article and paste it in the thumbnail field
Lemmy lets you edit any part of a post after posting, so I sometimes fix things if it doesn't look right.
(also welcome to Lemmy.ca π)