If you experienced a crash, please try clearing the cache as instructed below. This will not erase any of your games, data or saves.
1. Power down your Xbox using the Xbox controller or the Power Off button on your Xbox
2. Unplug the power cable from the back of your Xbox
3. Wait at least two minutes
4. Plug the cable back into your Xbox
5. Turn your Xbox back on
This will clear the cache of your Xbox of any cached data that might have become corrupted. Afterwards, check if the issue still occurs. If that sole procedure did not help, please check if loading an earlier save proves helpful.