Can't move one category to another

[leksar]

I can't understand what's wrong. Did this before, but now, when i'm trying to move one category to another i get the error

GET http://www.mtgm.ru/socket.io/?EIO=3&transport=polling&t=1436546344963-52 net::ERR_CONNECTION_REFUSED

this error points to nodebb.min.js?v=v0.7.0-8-gaa001b5:12847

I did "./nodebb upgrade" and "git pull" on my server 4 days ago.

[julian]

What do you see in the server-side logs, is NodeBB crashing?

[leksar]

Sorry for your time. Was too forgetful to check server logs. It's my mistake, I didn't deactivate the nodebb-plugin-ns-slugify which made for 0.7.1 version, not for 0.7.0.