removed temp caching

app.py

@@ -84,7 +84,7 @@ def handle_query(query, faiss_index, embeddings_texts, model):
             prompt=f"Based on the following context:\n\n{combined_text}\n\nAnswer the following question: {query}",
             max_output_tokens=200
         )
-        generated_text = response.result
+        generated_text = response.result if response else "No response generated."
     except Exception as e:
         print(f"Error generating text: {e}")
         generated_text = "An error occurred while generating the response."
@@ -105,7 +105,7 @@ def generate_concise_response(prompt, context):
             prompt=f"{prompt}\n\nContext: {context}\n\nAnswer:",
             max_output_tokens=200
         )
-        return response.result
+        return response.result if response else "No response generated."
     except Exception as e:
         print(f"Error generating concise response: {e}")
         return "An error occurred while generating the concise response."
@@ -128,14 +128,13 @@ def chatbot(message, history):
     response, sources = handle_query(message, faiss_index, all_texts, embedding_model)
     print("Query:", message)
     print("Response:", response)
-    total_text = response
+    total_text = response if response else "No response generated."
     if sources:
         print("Sources:", sources)
         relevant_source = "" 
         for source in sources:
             relevant_source += source + "\n"
         total_text += "\n\nSources:\n" + relevant_source
-            
     else:
         print("Sources: None of the provided sources were used.")
     print("----")
@@ -149,7 +148,6 @@ def chatbot(message, history):
     
     return total_text
 
-
 iface = gr.ChatInterface(
     chatbot,
     title="LLM Research Assistant",