Laravel 5 - Artisan::call('migrate',['--path' => $database_path."/migrations/new_migrations"]); not working

I am trying to execute migrations from the folder "new_migration" which is created in database/migration folder

$database_path = database_path();    Artisan::call('migrate',['--path'
=> $database_path."/migrations/new_migrations"]);

On local server its working fine.

my website hosted on forge server on which its not working, is there any permission issue?

via Chebli Mohamed