Fix crash

tournaments/models/match.py

@@ -149,7 +149,10 @@ class Match(models.Model):
         livematch = LiveMatch(title, date, duration, court, self.started(), ended)
 
         for team_score in self.sorted_team_scores():
+            if team_score.team_registration.logo:
                 image = team_score.team_registration.logo
+            else:
+                image = None
             names = team_score.team_names()
             scores = team_score.scores_array()
             weight = team_score.team_registration.weight