Laravel 8 Can't İnstall

[rapcrown]

Laravel 8 composer install and error help ?

  Problem 1
    - spatie/laravel-sitemap[5.9.0, ..., 5.9.1] require spatie/crawler ^5.0 -> satisfiable by spatie/crawler[5.0.0, 5.0.1, 5.0.2, v5.x-dev].
    - spatie/laravel-sitemap 5.9.2 requires spatie/crawler ^5.0|^6.0 -> satisfiable by spatie/crawler[5.0.0, 5.0.1, 5.0.2, v5.x-dev, 6.0.0, 6.0.1, 6.0.2, v6.x-dev].
    - spatie/crawler[5.0.0, ..., v5.x-dev] require guzzlehttp/psr7 ^1.4 -> found guzzlehttp/psr7[1.4.0, ..., 1.x-dev] but the package is fixed to 2.1.0 (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.
    - spatie/crawler[6.0.0, ..., v6.x-dev] require guzzlehttp/psr7 ^1.7 -> found guzzlehttp/psr7[1.7.0, ..., 1.x-dev] but the package is fixed to 2.1.0 (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.
    - Root composer.json requires spatie/laravel-sitemap ^5.9 -> satisfiable by spatie/laravel-sitemap[5.9.0, 5.9.1, 5.9.2].

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.