firefly-iii/app/config/session.php

<?php

return [
    'driver'          => 'file',
    'lifetime'        => 120,
    'expire_on_close' => false,
    'files'           => storage_path() . '/sessions',
    'connection'      => null,
    'table'           => 'sessions',
    'lottery'         => [2, 100],
    'cookie'          => 'firefly_session',
    'path'            => '/',
    'domain'          => null,
    'secure'          => false,

];