The piglins and the withers of natural foems do not spawn, nor by commands, the new animations close the Minecraft completely

I don't know how to generate the zombified piglins nor the skeleton withers I know they generate in my nether, I already tried in creative and I don't know how they generate neither with "/ summon" and the normal piglins neither the hoglins fight between them They and I have been updating to the official 1.16 and some things do not come out translated, not to mention that when pointing to a piglin a button appears that says open that it is not useful and every time I do a dance oh an animation appears regarding the character the Minecraft closes completely (it only happens when I have textures added)