Package installation failed

[apocello2008]

Can't install package over fresh Laravel with Voyager.
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Your requirements could not be resolved to an installable set of packages.

Problem 1
- Conclusion: don't install laravel/framework v8.12.0 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.12.1 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.12.2 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.12.3 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.13.0 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.14.0 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.15.0 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.16.0 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.16.1 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.17.0 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.17.1 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.17.2 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.18.0 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.18.1 (conflict analysis result)
- Conclusion: don't install laravel/framework v8.19.0 (conflict analysis result)
- Conclusion: don't install league/flysystem 1.1.3 (conflict analysis result)
- Root composer.json requires laravel/framework ^8.12 -> satisfiable by laravel/framework[v8.12.0, ..., 8.x-dev].
- Conclusion: don't install league/flysystem 1.1.2 (conflict analysis result)
- Root composer.json requires league/flysystem-sftp ^2.x-dev -> satisfiable by league/flysystem-sftp[2.x-dev].
- Conclusion: don't install league/flysystem[1.1.0] | install league/flysystem[2.0.0] (conflict analysis result)
- Conclusion: don't install league/flysystem 2.0.0 (conflict analysis result)
- league/flysystem-sftp 2.x-dev requires league/flysystem ^2.0.0 -> satisfiable by league/flysystem[2.0.0-alpha.1, ..., 2.x-dev].
- You can only install one version of a package, so only one of these can be installed: league/flysystem[1.0.41, ..., 1.x-dev, 2.0.0-alpha.1, ..., 2.x-dev].
- laravel/framework 8.x-dev requires league/flysystem ^1.1 -> satisfiable by league/flysystem[1.1.0, ..., 1.x-dev].
- Conclusion: don't install league/flysystem[1.1.1] | install league/flysystem[2.0.0] (conflict analysis result)
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[mijaelsaban]

same but in Laravel 6, what to do here?