Update app.py

app.py

@@ -323,8 +323,8 @@ def load_models_and_documents():
         dense_model = AsyncEngineArray.from_args(
             [
                 EngineArgs(
-                    model_name_or_path='GameScribes/mxbai-embed-large-v1', 
-                    engine='optimum',
+                    model_name_or_path='mixedbread-ai/mxbai-embed-large-v1', 
+                    engine='torch',
                     device='cuda',
                     embedding_dtype='float32',
                     dtype='float16',