Can you get a Resetti error when playing by yourself?

[Klave]

I was playing on New Leaf and my gates were open after a trade I did earlier. I went about doing things and played for around half an hour. Suddenly, I get a Resetti error whilst playing which confused me. Is this possible to happen e.g. if my internet cut out? Or was the trader still in my town? I swear they left after the trade, I normally wait for them to do so...
Or more worryingly, did someone come into my town when I wasn't looking? I don't think I could have missed that and I trust most people on my friend list anyway. Thanks for any help!

 

[Stacie]

Yes, you can get a resetti/disconnect even if you're by yourself, since you're still connected to online play if you don't close the gate. Sorry you had to lose some progress!

 

[Klave]

Ah I see, thank you. I was wondering if the gates would just close by themselves if something happened but oh well. Lucky I didn't lose an hour or too much work!