Versão não encontrada

[blackzig]

"require": {
    "php": "^7.1",
    "ext-pdo": "^7.1",
    "phpmailer/phpmailer": "~6.1",
    "league/plates": "v4.0.0-alpha",
    "matthiasmullie/minify": "^1.3",
    "coffeecode/uploader": "1.0.*",
    "coffeecode/cropper": "1.3.*",
    "coffeecode/optimizer": "2.0.*",
    "coffeecode/paginator": "1.0.*",
    "coffeecode/router": "1.0.*",
    "mercadopago/dx-php": "2.2.*",
    "valdeirpsr/pagseguro-sdk": "1.0.0"
}

UPDATE:

"C:\xampp\php\php.exe" "C:\Composer\composer.phar" "--ansi" "--no-interaction" "update"
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Root composer.json requires valdeirpsr/pagseguro-sdk, it could not be found in any version, there may be a typo in the package name.

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.
Done.