I started Laravel at this path:
C:\\Users\\Mad\\Work\\trunk\\product\\backend\\v1.2.1\\laravel
but it is not working, it is not starting. <
try to execute the command : composer update.
it will update and export all the directorys/files that u need.
because sometimes when u clone/download a repository from github .. there are pretty much directorys/files that are not present (not exportable .. present in .gitignor).
then try : php artisan serve.
it works for me