Version 4.7.13

applications/forums/setup/upg_100035/upgrade.php

@@ -49,7 +49,15 @@ class _Upgrade
 				$childForum->save();
 			}
 
-			$forum->setLastComment();
+			try
+			{
+				$forum->setLastComment();
+			}
+			catch( \Throwable )
+			{
+				/* This may error if columns are not present, so if it doesn't work, skip it. Later steps take care of it anyway. */
+			}
+
 			$forum->setLastReview();
 			$forum->save();
 		}