函数计算挂载了oss，读取目录提示这个，怎么解决？

函数计算挂载了oss，读取目录提示这个，怎么解决？{
"errorMessage": "[Errno 2] No such file or directory: '/bss/userss'",
"errorType": "FileNotFoundError",
"stackTrace": [
[
"File \"/var/fc/runtime/python3.10/bootstrap.py\"",
"line 549",
"in wsgi_wrapper",
"body = request_handler(environ, start_response)"
],
[
"File \"/code/index.py\"",
"line 9",
"in handler",
"files = os.listdir(mount_path)"
]
]
}