Corrupted memes can break databases and make lemmy sad

"empty/corrupt snapshot file" is a solvable issue. Look into pict-rs's storage in the sled directories. there should be some files that have .snap at the end. if any of these are zero-sized, delete them. if none of them are zero-sized, delete the most recently created one. then restart pict-rs

https://github.com/LemmyNet/lemmy/issues/2653