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PHP Laravel 4 Basics Getting Started with Laravel Installing Laravel Homestead

when i type vagrant up it give me an error. It suggests me to launch virtual box GUI but when i do that there is a error

The guest machine entered an invalid state while waiting for it to boot. Valid states are 'starting, running'. The machine is in the 'poweroff' state. Please verify everything is configured properly and try again.

If the provider you're using has a GUI that comes with it, it is often helpful to open that and watch the machine, since the GUI often has more helpful error messages than Vagrant can retrieve. For example, if you're using VirtualBox, run vagrant up while the VirtualBox GUI is open. I launch VirtualBox and it show me that Apertura di una sessione per la Macchina Virtuale homestead non riuscita.

Failed to load VMMR0.r0 (VERR_SUPLIB_WORLD_WRITABLE).

Codice 'uscita: NS_ERROR_FAILURE (0x80004005) Componente: Console Interfaccia: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}