Like others, I get this message on occasion: "the organizer is experiencing technical difficulties". Also, like others, I am not experiencing anything out of the ordinary at the time. I thin k it is safe to say, it has something to do with the strength of the Internet connection and/or the transmission of data. In most cases, you can just ignore it. I have never had it shut down a session. And really, for infrequent issues, you don't have much choice. I have experienced it with a high-speed Ethernet connection, as well as wi-fi. For infrequent problems, the high speed vendor or IT is not likely to change your equipment. If you have a choice, use the Ethernet connection over wi-fi. For frequent problems, you may be able to make a case to make a change with your equipment.
The message sometimes does preclude GoToTraining issues. The issues include problems with screen sharing, running a poll, or using an activity to display a video. Of course, these issues occur even when you are not getting the error message. Use the message as a warning. You can assign a co-organizer, so that if your session does end, it will remain up for everyone else. Only you have to log back in, not the participants. Once the session starts, the co-organizer does not have to be a licensed user.
Watch the Audience view to see if there is a discrepancy between what you are seeing and what your audience is seeing. In that case, I suggest stopping/starting screen sharing to reinitiate the transmission. There are times, however, when the Audience view is incorrect. If given notice by the participants that your slides are not moving, stopping /starting screen can reinitieate the transmission.
We have this same issue and it's frequent but not consistent. Thankfully, it never actually ends the session and we always have a co-organizer assigned. So far it always happens when we are moving into activity breakouts. I am guessing it has something to do with a connection loss/hiccup when the breakouts are launched. I'd love to figure it out because I don't love that the learners see that during the session and get worired about the technology.