Laravel php artisan produces error

Another alternative solution to commenting out the url() and asset() calls could be to check the environment at run time:

return [
    'URL' => app()->runningInConsole() ? '' : url(''),
    ...
];

Please make sure that you are not using any url() or asset() or other helpers functions inside your configuration files

I my case url() helper function in my filesystem.php is causing the issue. I removed it and every thing works fine.