added new structure

util/app.py

@@ -124,7 +124,7 @@ def show_stats(player_opgg_url):
         # Extract additional stats
         playstyle = training_features['playstyle'].mode()[0] if 'playstyle' in training_features else 'N/A'
         print("processed playstyle\n")
-        role_specialization = training_features['role_specialization'].mode()[0]  # Most common role
+        role_specialization = training_features['role_specialization'].mode()[0] if 'role_specialization' in training_features else 'N/A'  # Most common role
         print("processed role_specialization\n")
         champion_loyalty_score = training_features['champion_loyalty_score'].mean().round(2)  # Average loyalty
         print("processed champion_loyalty_score\n")