php artisan doesnt work [ErrorException] Undefined offset: 0 in laravel

when i try to run php artisan i give the error

 [Error Exception]     
 Undefined offset: 0

when i run composer install or composer update i got this error

Script php artisan clear-compiled handling the post-install-cmd event returned with an error

[RuntimeException]  
  Error Output:   

i install all extensions, run composer dumpautoload but i still get this error. the problem is in this current procjet(i created another laravel project and it works fine)

via Chebli Mohamed