Laravel 8 not working

[shalaka-deshan0110]

Hi all,
when using composer require it get this error.

Problem 1
- Root composer.json requires app-vise/laravel-appstore-server-notifications ^0.0.1 -> satisfiable by app-vise/laravel-appstore-server-notifications[v0.0.1].
- app-vise/laravel-appstore-server-notifications v0.0.1 requires illuminate/support ~5.7.0|^6.0 -> found illuminate/support[v5.7.0, ..., 5.7.x-dev, v6.0.0, ..., 6.x-dev] but these were not loaded, likely because it conflicts with another require.

Please provide a solution