Guild Wars 2

Hey guys, according to this post a numerous amount of players are having the same issue even myself for the last two days.
https://forum-en.gw2archive.eu/forum/support/bugs/Disconnecting-when-entering-dungeons/first

Yeah i keep getting the same issue. Especially when i use my Guardian to enter a fractal with a group, i keep getting the message in the image posted. Any help with this?