Unable to get package using composer

[mmor93]

Hi,
I can't get the package using 'composer require "demi/cropper" "~1.0"' command and i keep getting this error:
Your requirements could not be resolved to an installable set of packages.

Problem 1
- demi/cropper 1.2.0 requires bower-asset/cropper * -> no matching package found.
- demi/cropper 1.1.2 requires bower-asset/cropper * -> no matching package found.
- demi/cropper 1.1.1 requires bower-asset/cropper * -> no matching package found.
- demi/cropper 1.1.0 requires bower-asset/cropper * -> no matching package found.
- demi/cropper 1.0.1 requires bower-asset/cropper * -> no matching package found.
- demi/cropper 1.0.0 requires bower-asset/cropper ~1.0 -> no matching package found.
- Installation request for demi/cropper ~1.0 -> satisfiable by demi/cropper[1.0.0, 1.0.1, 1.1.0, 1.1.1, 1.1.2, 1.2.0].

Potential causes:

• A typo in the package name
• The package is not available in a stable-enough version according to your minimum-stability setting
  see https://getcomposer.org/doc/04-schema.md#minimum-stability for more details.
• It's a private package and you forgot to add a custom repository to find it

Read https://getcomposer.org/doc/articles/troubleshooting.md for further common problems.

[demisang]

Hello, add this lines to your composer.json:

"repositories": [
    {
        "type": "composer",
        "url": "https://asset-packagist.org"
    }
]

And check this lines in your /common/config/main.php:

'aliases' => [
    '@bower' => '@vendor/bower-asset',
    '@npm' => '@vendor/npm-asset',
],

[masterfego]

Thank you @demisang

The new repository url added in my composer.json file resolved my issues.