For a quick look at S.M.A.R.T. values you could try smartctl from smartmontools on SystemRescueCD.
On the reporting server issue, please report any prior successful reports and how long they were. This current issue looks from the end of both of your logs like it hit a length issue, e.g. Duplicati hit this issue.
System.UriFormatException: Invalid URI: The Uri string is too long.
at System.UriHelper.EscapeString(String input, Int32 start, Int32 end, Char[] dest, Int32& destPos, Boolean isUriString, Char force1, Char force2, Char rsvd)
at System.Uri.EscapeDataString(String stringToEscape)
at Duplicati.Library.Modules.Builtin.SendHttpMessage.SendMessage(String subject, String body)
at Duplicati.Library.Modules.Builtin.ReportHelper.OnFinish(Object result)