Update app.py

app.py

@@ -278,7 +278,7 @@ You are a helpful assistant answering questions based on provided PDF content. U
             temperature=0.7,
             top_p=0.9,
             do_sample=True,
-            num_beams=2,
+            num_beams=1,  # FIXED: Changed from 2 to 1 to be compatible with streaming
             no_repeat_ngram_size=2
         )
         
@@ -437,7 +437,7 @@ You are a helpful assistant answering questions based on provided PDF content. U
             temperature=0.7,
             top_p=0.9,
             do_sample=True,
-            num_beams=2,
+            num_beams=2,  # This is fine since non-streaming doesn't use a streamer
             no_repeat_ngram_size=2
         )