My brother and I started a new world, hosted in his computer. We were able to play the first time without any kind of issue, but when I tried to get into it the next day (he was of course online and the invitation was sent), I got the "unable to connect to the world" error screen.

The weird thing is that after several attempts I was able to enter the game, and could play without problems but every time I try to join into his world again, I get the same error.

It's really frustrating since I have no idea why it happens or how I'm able to log into it sometimes, it's just random. I've already looked for the error online, tried many possible fixes but nothing works.

Please help. Thank you.