fix: Application model use

Author: zhanweizhang7

apps/models_provider/tools.py

@@ -105,7 +105,7 @@ def is_valid_credential(provider, model_type, model_name, model_credential: Dict
 
 
 def get_model_by_id(_id, workspace_id):
-    model = QuerySet(Model).filter(id=_id)
+    model = QuerySet(Model).filter(id=_id).first()
     get_authorized_model = DatabaseModelManage.get_model("get_authorized_model")
     if get_authorized_model is not None:
         model = get_authorized_model(model, workspace_id)