file_put_content error : failed to open stream: Permission denied

Are you are that is the exact error? That refers to the root of your hdd, not laravel. Can you post the exact error

php artisan cache:clear

php artisan view:clear

thanks for our reply :

@maverickchan i have even made cache:clear clear-compiled view:clear config:clear and dump autoload but without result.

@ Sinnbeck : this is the exact error message : file_put_contents(/fgTrTnBjujXVEJLAvRSUak4PmDhNjKdqytkNwuHb): failed to open stream: Permission denied

the file initiator is /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php in my app and yes it's strange that the error point to the hdd root. this is the session that try to write a file but i don't use file session system but cookies.... Maybe the updating session system change something from 5.5 to 5.8..?

what is your OS?

OSX v 10.13..6.. I'm cloning the same app from git on windows and all is working fine ;(( sure...no files right system on it.

For other in the same trouble, I found the solution :

Sham on me, my first mistake was i have one line in .env file with SESSION_DRIVER=file that overide my first SESSION_DRIVER=cookies in then file ....

And on update process from 5.5 to 5.6, i need to delete the trustedProxy.php in config and update http\middleware\TrusProxies.php to :

<?php

namespace App\Http\Middleware;

use Illuminate\Http\Request;
use Fideloper\Proxy\TrustProxies as Middleware;


class TrustProxies extends Middleware
{
    /**
     * The trusted proxies for this application.
     *
     * @var array|string
     */
    protected $proxies;
    /**
     * The headers that should be used to detect proxies.
     *
     * @var int
     */
    protected $headers = Request::HEADER_X_FORWARDED_ALL;
}

next, config:clear cache:clear clear-compiled and composer dump-autoload.