Update app.py

app.py

@@ -20,7 +20,7 @@ load_dotenv()
 app = Flask(__name__)
 app.secret_key = os.getenv('SECRET_KEY', secrets.token_hex(16))
 app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024  # 16MB max file size
-app.config['UPLOAD_FOLDER'] = tempfile.gettempdir()
+app.config['UPLOAD_FOLDER'] = "/tmp"
 
 # Initialize RAG system (singleton)
 rag_system = None