I recently signed up for a free trial of ArcGIS. The past couple of days I have been working on mapping a site for permitting. Yesterday, when I finally finished, almost immediately my map was compromised and the USGS National Map basemap I had been working on was "unavailable", luckily I grabbed a snapshot of the data beforehand. I've tried logging out and refreshing and reopening my map file, but I get a series of error messages. Wondering if there is any reason for this or if there is anything I can do to avoid reloading layers unto another basemap. Attached are the Error Messages that I have been receiving.