laravel vinkla pusher not install

don't install illuminate/support v5.5.43|don't install laravel/framework v5.8.35 - don't install illuminate/support v5.5.44|don't install laravel/framework v5.8.35 - Installation request for laravel/framework (locked at v5.8.35, required as 5.8.*) -> satisfiable by laravel/framework[v5.8.35]. - Installation request for pusher/pusher-http-laravel ^4.2 -> satisfiable by pusher/pusher-http-laravel[v4.2.0, v4.2.1, v4.2.2].

Installation failed, reverting ./composer.json to its original content.

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