Perhaps the image hosting server timed out. That happens sometimes and I will get very vague errors. I normally wait 1 minute, then try to repost it. If it happens again, I wait 1 more minute, then try to post it a third try. I might even wait an hour before I post it again.
Stuff like that happens.
Yeah, something like this sounds reasonable. However, I'd classify this as a bug. But if it's a feature, I stand corrected.
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