Add logging to bot

bot.go

 					if err != nil {
 						log.Println("Failed to find tracks from DB", err)
 					}
-					log.Println("Checking if playlist needs updating", currentTracks, tracks)
+					log.Println("Checking if playlist needs updating", currentTracks, tracks, err)
 					if len(tracks) > 0 && (err != nil || !reflect.DeepEqual(currentTracks, tracks)) {
 
 						if playlistID == "" {