您的要求无法解析为一组可安装的软件包Dingo / api未安装在laravel v5.5.24上

I want install Dingo package on my project and when I do

composer require dingo/api:"2.0.0-alpha1"

I have a lot of errors

How can I resolve this ?

I had to update instand of require

I added

"require": {
   "dingo/api": "2.0.0-alpha1"
}

Before to update

composer update

And now all is fine !