Cannot install php-http/guzzle6-adapter

[sinnbeck]

After installing mailgun I am not able to install php-http/guzzle6-adapter

I get the following error

Problem 1
    - Installation request for php-http/guzzle6-adapter dev-master -> satisfiable by php-http/guzzle6-adapter[dev-master].
    - Conclusion: remove php-http/httplug v1.1.0
    - Conclusion: don't install php-http/httplug v1.1.0
    - php-http/guzzle6-adapter dev-master requires php-http/httplug ^2.0 -> satisfiable by php-http/httplug[2.0.x-dev, v2.0.0].
    - Can only install one of: php-http/httplug[2.0.x-dev, v1.1.0].
    - Can only install one of: php-http/httplug[v2.0.0, v1.1.0].
    - Installation request for php-http/httplug (locked at v1.1.0) -> satisfiable by php-http/httplug[v1.1.0].

I am using mailgun 5.0.4

[sinnbeck]

Was able to fix it using.

php composer.phar require php-http/guzzle6-adapter 1.1.1

Perhaps the documentation should be updated ?

[JCarlosR]

I had to do the same, and I was about to advise. You already did it.