The small part of log you've posted seems to show that the map you received ended to be different to the one that was sent to you :
CRC mismatch. Expected 50ba44c, got 735dd07a

Does it make sense to you ? If not, can you post the full log file please ?

Yeah, but I can't see what could possibly ...

Hello,

I've been getting this bug across all 0.15.xx versions recently, just started happening out of nowhere when I try to connect to a friend's server.
Whenever my client finishes downloading the map it shows a message saying "Downloading map from other peers failed" and it won't let me join the ...