Socket connection: type error

[her-ur]

If i use socket connection:

redis:
    host: '/tmp/redis.sock'

There is an error:

TypeError
Argument 2 passed to Kdyby\Redis\RedisClient::__construct() must be of the type int, null given, called in /Users/karelborkovec/Develop/Web/freelo/vendor/kdyby/redis/src/Kdyby/Redis/DI/RedisExtension.php on line 300

It's because of this line of code. And if this is a socket connection it should be reflected here.
What do you think?