Camels do not render after spawning them with camel spawn egg or commands.

Camels do not appear after spawning them through camel spawn egg or commands. When I spawn the camel with its spawn egg or commands, the camel shadow was appearing but he itself do not spear I killed to confirm that I spawn him and several times I spawned him, but he does not appear himself, but its shadow appear. To understand the issue here are some attachments of images and m affected world.