I have a new version of the game that has entered me today that is 1.12.1 when the one I had before was 1.14.4 . I've been playing minecraft for a long time, I had never had any problems, but today, when I entered, I was very badly caught and what I did was close and reopen the game and when I enter to select the world, there is not my world that has made more progress called JACINTO disappeared without more. Sorry for mi bad english