How to upgrade google cardboard sdk for unity?
<p>I'm creating simple vr game and I use spatial audio in it. Recently 0.7 version of cardboard sdk for unity came out and I want to upgrade my 0.6 version because they added audio mixers for spatial audio. I'm new to unity so I'm probably doing somtehing wrong. I just tried importing new package but I've got this error while I was  trying to import it: 
<a href="https://i.stack.imgur.com/01M3T.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/01M3T.jpg" alt="error1"></a>
(odmowa dotępu means access denied)
Then when I click cancel I get these bugs:
<a href="https://i.stack.imgur.com/UDS5A.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UDS5A.jpg" alt="error2"></a></p>

<p>Do you know how should I upgrade this package correctly? I haven't done anything like this before so I might have done it completely wrong.</p>