The realm is currently ONLY using Realism Craft from the Minecraft Marketplace, it is up to date. Players will be prompted to download the addon. The loading bar will move roughly half way and remain there for several minutes. Then the game will crash.
No amount of restarting or redownloading fixes this issue.
The realm world has been restarted three times to attempt to rectify this issue.
All players experience the exact same symptoms.
The host has redownloaded the addon twice.
We need more eyes here