Update memory.py

memory.py

@@ -4,7 +4,7 @@ from transformers import AutoTokenizer, AutoModel
 class MemoryVectorStore:
     def __init__(self, model_name="sentence-transformers/all-MiniLM-L6-v2"):
         self.cache_dir = "/tmp/hf_cache"
-        os.makedirs(self.cache_dir, exist_ok=True)
+        os.makedirs(self.cache_dir, exist_ok=False)
 
         self.tokenizer = AutoTokenizer.from_pretrained(
             model_name, cache_dir=self.cache_dir