Figures not shown in Help Center Tutorials

You are not alone.
For example in this article, first image shows blank but rest of them are fine.

Here is the difference in their URLs:

~ This doesn’t show up: https://help.sketchup.com/images/fg115_1.png
~ This shows up: https://help.sketchup.com/sites/help.sketchup.com/files/images/sketchup-94921-School2.png

Error for not showing the image: