Hmm. I use Amethyst. They're uploaded to imgur.com.
Discussion
Might be the lack of image interoperability that’s been talked about. Is it NIP94?
I’m getting blank images from #[4] too. Are you on Amethyst #[5] ?
You don’t appreciate interoperability as much as when it’s gone and we lose each other’s messages. We should not be seeing blank feeds. I hope bridges are built. #loveinteroperability
No I’m on Damus but I use Imgur as my image host for memes. I manually upload them and paste the link. I see mine and Derek’s images fine, so it wouldn’t be a NIP94 thing. Are you using a vpn or behind a firewall that might be blocking Imgur?
Ok, it’s good to know it’s not Amethyst. Something I use is blocking imgur. Whether it’s the vpn or firewall I don’t know. I think I’ve uploaded to Imgur before without a problem. Hmmm… I need to troubleshoot. Any suggestions are welcome.
If you enter imgur right now, does it give you an error? Just double checking. Here’s what I get. 
Imgur loads fine for me. I’m not on a vpn though, and I remember something a couple weeks ago about Imgur blocking some VPNs. If that’s the case, you can try switching to a different server in your vpn settings and see if that fixes it.
I’m uploading a pic here directly to Nostr.build using the Damus uploader just to see if you can see that one. 
Yes, I see it. Very wabi sabi, thank you. I’ll try your suggestion. 