Are you only unable to load into one character or is this happening on every character on your account?
Deleting the local game save data may help resolve the loading screens you are getting.
- From the Xbox Home Menu, navigate to My games & apps.
- Go to Games.
- Highlight The Elder Scrolls Online tile and press the [Menu] button of the controller.
- Select Manage Game. Highlight and select Save Data for the desired user.
- Select Delete.
If this is only affecting one character, please let us know the character name.