Package guzzle/http is abandoned, you should avoid using it. Use guzzle/guzzle instead.
I think you should use the version 5 instead of 3.6

The full error message:
`Package guzzle/common is abandoned, you should avoid using it. Use guzzle/guzzle instead.
Package guzzle/stream is abandoned, you should avoid using it. Use guzzle/guzzle instead.
Package guzzle/parser is abandoned, you should avoid using it. Use guzzle/guzzle instead.
Package guzzle/http is abandoned, you should avoid using it. Use guzzle/guzzle instead.`
