minor update

app.py

@@ -99,7 +99,7 @@ with gr.Blocks() as demo:
         feedback = upload_to_pinecone(pinecone_api_key, index_name, namespace_name, embeddings, dim, df)
 
         logging.info(feedback)
-        if feedback is dict:
+        if isinstance(feedback, dict):
             return f"Retrieved {len(ids)} papers from Zotero. Successfully upserted {feedback['upserted_count']} embeddings in {namespace_name} namespace."
         else :
             return feedback