Thank you for your help.This error is caused by a blank prodinfo and using Atmosphere.
Someone mentioned that he was able to fix that :
https://gbatemp.net/threads/change-...ormal-does-not-allow-you-to-go-online.632946/
I haven't tried it myself so I don't know the details.
That user also mentioned that you still cannot go online and connect to Nintendo's servers but at least it should not crash anymore.
How did you solve the issue with code: 2123-0011 ?Sorry, duplicated post.
The problem was solved here: https://gbatemp.net/threads/error-code-2123-0011-0x167b-program-0100000000025.657910/
