Torch.lstsq didn't work

I want to use torch.lstsq(), but I got a this error msg.

" module ‘torch’ has no attribute ‘lstsq’ "

Why does this error occur?

This method was introduces in PyTorch 1.2.0, so make sure you are using the latest stable release.
You can find the install instructions on the website.

Oh, I see. Thanks to your reply!