[ERROR] No attribute?

I was going through the VTA tutorial Saving Model.
An error happened when I ran python code temp = utils.tempdir() following the tutoial.
It says “AttributeError: module ‘tvm.utils’ has no attribute ‘tempdir’”.
I look through the source code in tvm\python\tvm\utils, there is no module called tempdir.
Has it been deleted (just indicated by its name) ?

I fix the error by from tvm.contrib import utils instead of from tvm import utils.
But get a new error: NameError: name 'remote' is not defined.
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