update

processors/roberta_analysis.py

@@ -219,8 +219,16 @@ def compare_sentiment_roberta(texts, model_names=None):
     # Compare sentiment scores
     if len(sentiment_results) >= 2:
         model1_name, model2_name = model_names[0], model_names[1]
-        score1 = sentiment_results[0]["sentiment_score"]
-        score2 = sentiment_results[1]["sentiment_score"]
+        
+        # Add null checks for the sentiment results
+        score1 = 0
+        score2 = 0
+        
+        if sentiment_results[0] and "sentiment_score" in sentiment_results[0]:
+            score1 = sentiment_results[0]["sentiment_score"]
+        
+        if sentiment_results[1] and "sentiment_score" in sentiment_results[1]:
+            score2 = sentiment_results[1]["sentiment_score"]
         
         # Calculate difference and determine which is more positive/negative
         difference = abs(score1 - score2)