Init current playlogs. engine-clock#11

src/models.py

@@ -483,6 +483,8 @@ class ClockInfo(db.Model):
                     playlogs = PlayLog.select_for_timeslot(most_recent_track.timeslot_id)
                     playlogs.sort(key=lambda track: track.track_start, reverse=False) 
                     info["current_playlogs"] = playlog_schema.dump(playlogs)                    
+                    if info["current_playlogs"] == None:
+                        info["current_playlogs"] = {}
 
                     # Invalid timeslots (e.g. in fallback scenarios) get a virtual start date of the first fallback track
                     if info["current_timeslot"]["timeslot_id"] == -1: