when update composer guzzle abandoned error

Question

When composer update this error occur

Package guzzle/guzzle is abandoned, you should avoid using it. 
Use guzzlehttp/guzzle instead.

How can I fix that?

Answer 1

If there is a package installed that you did not require explicitly, you can use the why-not command of Composer to check why this package was installed:

composer why guzzle/guzzle

Answer 2

this message is not an error

Try

composer update

composer why guzzle/guzzle