Update app.py

app.py

@@ -4,6 +4,7 @@ from llama_index.core import VectorStoreIndex, SimpleDirectoryReader, Settings
 from llama_index.embeddings.huggingface import HuggingFaceEmbedding
 from llama_index.legacy.callbacks import CallbackManager
 from llama_index.llms.openai_like import OpenAILike
+from sentence_transformers import SentenceTransformer  # 确保你已经安装了 sentence-transformers 库
 
 # Create an instance of CallbackManager
 callback_manager = CallbackManager()
@@ -27,7 +28,7 @@ st.title("llama_index")
 @st.cache_resource
 def init_models():
     embed_model = HuggingFaceEmbedding(
-        model_name="./sentence-transformer"
+        model_name="sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2"  # 这里替换成你想要使用的在线模型名称
     )
     Settings.embed_model = embed_model