I was planning to have a bet running with @sam_nazarko about when the first “ATV Image update install error” would be reported after the October update 
Please check the many other reports that show up every month after the update
https://discourse.osmc.tv/search?q=ATV%20image%20install%20error%20order%3Alatest
Your boot partition is most likely read only due to unclean shutdown.