Using sample code does not upload the box

When testing the api i followed the sample code:

```
# Upload box asset
uri = URI.parse(upload_url[:upload_path])
request = Net::HTTP::Post.new(uri)
box = File.open(BOX_PATH, "rb")
request.set_form([["file", box]], "multipart/form-data")
response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme.eql?("https")) do |http|
http.request(request)
end
```

On the response i always get Http Service unavailable.

i'm i missing something ?

My ruby version:
ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-darwin19]
vagrant_cloud (3.0.5)