"Already logged into duel server somewhere!" error

[Rabatis]

I was playing a custom game when I got disconnected. Upon logging in again, I tried to go back in, but got this error message instead:

https://imgur.com/g2xG6lw

Please fix and advise on how to deal with this/avoid this kind of problem in the future.

Thanks.

[CrystalMusic]

its not a glitch. Heres how to solve this issue becasue iv had to do this many times before and it works:
1 go to your browsing history (CTRL + H)
2: Click clear browsing data
3: make sure browsing history, cookies and other site data, and cashed images and files are all checkboxed and the time range is "All Time"
4 click clear data.

This will fix the issue because even though you know you arent signed in elsewhere, your browser thinks you are becasue of the cookies and site data. so regularly doing this will prevent this issue

you may have to restart your PC to finalize this fix