Compser/Version issues

[amadeuszxd]

I have a problem with adding this package to my project.
First:

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

Problem 1
- Root composer.json requires linker/api-client ^0.3.2 -> satisfiable by linker/api-client[0.3.2].
- linker/api-client 0.3.2 requires guzzlehttp/guzzle ~6.0 -> found guzzlehttp/guzzle[6.0.0, ..., 6.5.8] but the package is fixed to 7.5.0 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.
You can also try re-running composer require with an explicit version constraint, e.g. "composer require linker/api-client:*" to figure out if any version is installable, or "composer require linker/api-client:^2.1" if you know which you need.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

Second when I'm trying "--with-all-dependencies":

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

Problem 1
- Root composer.json requires linker/api-client ^0.3.2 -> satisfiable by linker/api-client[0.3.2].
- linker/api-client 0.3.2 requires doctrine/common ^2.5 -> found doctrine/common[v2.5.0, ..., 2.13.3] but these were not loaded, likely because it conflicts with another require.

You can also try re-running composer require with an explicit version constraint, e.g. "composer require linker/api-client:*" to figure out if any version is installable, or "composer require linker/api-client:^2.1" if you know which you need.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

Can someone update composer.json to newest version?