"You cannot serialize or unserialize PDO instances"

[olivM]

i got this error when testing via
php artisan sqn:test

You cannot serialize or unserialize PDO instances {"exception":"[object] (PDOException(code: 0): You cannot serialize or unserialize PDO instances at /Users/olivm/Workspace/lesinrocks-front/vendor/laravel/framework/src/Illuminate/Queue/Queue.php:139)

[doxadoxa]

I faced same problem. Did you find a solution?