add transformer path variable

app.py

@@ -15,6 +15,12 @@ warnings.filterwarnings('ignore')
 # Load environment variables from .env file
 load_dotenv()
 
+cache_dir = "./transformers_cache"
+os.makedirs(cache_dir, exist_ok=True)  # 디렉토리 생성
+os.environ["TRANSFORMERS_CACHE"] = cache_dir  # Hugging Face 캐시 경로 설정
+
+print("Hugging Face Cache Path:", os.getenv("TRANSFORMERS_CACHE"))
+
 class PDBSearchAssistant:
     def __init__(self, model_name="google/flan-t5-large"):
         # Set up HuggingFace pipeline with better model