base_url without scheme makes it parse it as a path

[simoheinonen]

        foo_bar:
            base_url: 'api.foobar.com'

    "base_uri" => GuzzleHttp\Psr7\Uri^ {#9583
      -scheme: ""
      -userInfo: ""
      -host: ""
      -port: null
      -path: "api.foobar.com"
      -query: ""
      -fragment: ""
      -composedComponents: null

vs

        foo_bar:
            base_url: 'https://api.foobar.com'

    "base_uri" => GuzzleHttp\Psr7\Uri^ {#9583
      -scheme: "https"
      -userInfo: ""
      -host: "api.foobar.com"
      -port: null
      -path: null
      -query: ""
      -fragment: ""
      -composedComponents: null