Update app.py

app.py

@@ -17,7 +17,7 @@ class RAGChatbot:
         #             )
         self.model = AutoModelForCausalLM.from_pretrained(
             model_name, 
-            torch_dtype=torch.bfloat16, , 
+            torch_dtype=torch.bfloat16,  
             device_map="auto"
         )