We have confirmed an issue with some save data for the Nintendo Switch version of Monster Hunter Rise: Sunbreak causing the message “The Software Was Closed Because An Error Occurred”to display when you try to save or when you go to a loading screen.

When this issue occurs, you may no longer be able to save the game and/or your save data may become corrupted.　

This error may be caused by the save data size growing too large. If you are experiencing this issue, or if saving is taking a longer time than usual*, you may be able to fix/avoid the issue by deleting a certain number of Guild Cards (at least 10).
*If saving is taking a long time, your save data size may be getting too large.

We are currently looking into a way of fixing this issue. We apologize for any inconvenience this may cause.

*This error may also be caused by other factors. Please see the below website for more details.

Nintendo Switch Customer Support
(Switch) Error Message: The Software Was Closed Because An Error Occurred
https://en-americas-support.nintendo.com/app/answers/detail/a_id/22379/~/error-message%3A-the-software-was-closed-because-an-error-occurred