I've found similar questions asked elsewhere, but none seem to address my problem. I created this repo a few days ago:
https://github.com/jeanluct/adcell
Since then I've been getting a "Cannot retrieve the latest commit at this time", which is preventing the image in my README.md from loading. All other operations work just fine: cloning, pushing, looking at history, etc. I tried two browsers and asked friends to look, and they see the same error. A very weird part of this is that the error does not appear on my phone. (I saw no disruption in GitHub's status that would indicate that this is a temporary problem. It's been about 4 days.)
I tried creating a different project adcell2, and it worked fine (without error). I deleted the original and renamed adcell2 to adcell, and the error came back!
At this point I'll probably leave it alone if there's no fix. I'm loath to rename the project since I've already sent the link to my students and others. But I was curious to see if anyone has encountered this strange behavior previously.
Many thanks,
J-LT