Unable to add package in laravel

[sanjay-possibility]

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

Problem 1
- Root composer.json requires lyal/checkr ^0.14.0 -> satisfiable by lyal/checkr[0.14].
- lyal/checkr 0.14 requires guzzlehttp/guzzle ~6.0|~5.0|~4.0 -> found guzzlehttp/guzzle[4.0.0-rc.1, ..., 4.x-dev, 5.0.0, ..., 5.3.x-dev, 6.0.0, ..., 6.5.x-dev] but it conflicts with your root composer.json require (^7.0.1).

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

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

[sanjay-possibility]