I wanted to play Minecraft: Pocket Edition with my friends and girlfriends in a private Minecraft: Pocket Edition world. I started the Minecraft: Pocket Edition Launcher, then I've created the world and I went underwater to kill some fishes. But then my world has stopped rendering and loading, as you can see in the screenshot that I've attached below. This error only occurs in the Minecraft: Pocket Edition version 1.17.40.06. But I still can hear the environment sounds (e.g. swimming or animal sounds) and I can also see my coordinates and my lives and the hunger bar.