Update app.py

app.py

@@ -147,8 +147,10 @@ def invoke(openai_api_key, rag_option, prompt):
             result = llm_chain(llm, prompt)
             completion = result
     except Exception as e:
+        completion = e
         raise gr.Error(e)
-    wandb_log(prompt, completion, rag_option)
+    finally:
+        wandb_log(prompt, completion, rag_option)
     return result
 
 description = """<strong>Overview:</strong> Context-aware multimodal reasoning application that demonstrates a <strong>large language model (LLM)</strong> with