I am using Android. I have used the File explorer to navigate to the minecraftWorlds folder as you have described. My world is not there so I cannot provide a copy, but strangely the backup of my world that I made in November last year is there. The issue is not resolved.
Same problem here. After a couple of seconds of the world being launched, the screen goes blank and Minecraft crashes. It is just one of my worlds that causes this problem.
I am using Android. I have used the File explorer to navigate to the minecraftWorlds folder as you have described. My world is not there so I cannot provide a copy, but strangely the backup of my world that I made in November last year is there. The issue is not resolved.