Whenever I Load onto a Realm there's nothing but a Blue Screen. Tried loading on 2 different devices and it still happens

I loaded onto a Friend's Realm and there was nothing but a Light Blue Screen. I had no texture packs on. I couldn't see the Hotbar, Hearts, anything. I tried loading onto MC on a different device and it still didn't work, though I could not wee the GUI but not the game. This issue appears to only be for Realms as Worlds and Servers work perfectly fine.