Update app.py

app.py

@@ -78,6 +78,9 @@ class RAGChatbot:
         return response.split("Answer:")[-1].strip()
 
     def chat(self, query, history):
+        if not query:
+            return history, ""
+        
         try:
             # Retrieve relevant context
             context = self.retrieve_relevant_context(query)
@@ -87,9 +90,10 @@ class RAGChatbot:
             
             # Append to history and return as list of tuples
             updated_history = history + [[query, response]]
-            return updated_history
+            return updated_history, ""
         except Exception as e:
-            return history + [[query, f"An error occurred: {str(e)}"]]
+            error_response = f"An error occurred: {str(e)}"
+            return history + [[query, error_response]], ""
 
 # Create Gradio interface
 def create_interface():
@@ -128,7 +132,7 @@ def create_interface():
             outputs=[chatbot, msg]
         )
         
-        clear_btn.click(lambda: None, None, [chatbot, msg])
+        clear_btn.click(lambda: (None, ""), None, [chatbot, msg])
 
     return demo