Update app.py

app.py

@@ -77,9 +77,8 @@ def invoke(openai_api_key, use_rag, prompt):
                                                     return_source_documents = True)
             result = rag_chain({"query": prompt})
             result = result["result"]
-        except AuthenticationError as e:
-            gr.Error(e)
-            return e
+        except Error as e:
+            result = e
     else:
         chain = LLMChain(llm = llm, prompt = LLM_CHAIN_PROMPT)
         result = chain.run({"question": prompt})