well .. i did the exact same thing as taylor in that video.
I created a Consumer app with his code provided by Matt Stauffer here : https://mattstauffer.co/blog/introducing-laravel-passport
and I managed to make it to give me the authorization page ( for some reason it didn't work at first... ) and after pressing the authorize button it was saying that guzzlehttp/client class was not found. I install guzzlehttp/guzzle and now the server ( valet ) fails . Keeps on loading and loading and ... loa....g .
@donkfather
I also met this problem, and luckily it worked after hours for finding. Stupid error :D
I found that the problem is value contain ":" after Bearer in Authorization. I removed then it worked