You'll need to answer Mark's question.
If the error displays under normal use and shooting video, you have a more serious issue:
Bay Area - CA
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I am having the exact same issue. I have done a few FB Lives with no problem, going on for well over an hour. Attempted a FB live via my Canon 80D this week, and the camera shuts down after less than 2 minutes, and gives an Error 70. Everything I see in Google searches are all related to shooting stills. I can still shoot photos and I can shoot regular video with no problem. Only when I try to go live through the EOS Utility that it gives this error, and always within the 2 minute mark.