Installation error

[dontagr]

Your requirements could not be resolved to an installable set of packages.

Problem 1
- The requested package yandex/webmaster.api 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.

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