The fix for this issue is available in the latest InDesign release 16.2.1
Please update to this latest version to get the fix.
Adobe InDesign team
An error occurred while saving the commentAnonymous commented
Yes! My coworkers and I are having the same issue. I think it's something Canva does to it's PDFs to make sure you use their program and nothing else. When I drag the PDFs into Illustrator they open fine and when I then save them as a PDF and place in InDesign there are no issues. However, thats extra work, especially if you need to do this for multiple files.