[BUG] I18n doesn't work with redis 4 version

[mPanasiewicz]

What I tried to do

I'd like to work with the newest version of redis with i18n

What I expected to happen

Serve me translations from redis

What actually happened

Exception occured:

Redis::CommandError: ERR unknown command `[]`, with args beginning with: `de-DE.i18n.transliterate.rule`

Versions of i18n, rails, and anything else you think is necessary

Versions:
rails: 6.0.3.7
ruby: 2.7.3
redis: 4.3.1(the same on 4.2.5)
i18n: "i18n", "~> 1.8", ">= 1.8.10
Backend configuration:

I18n.backend = I18n::Backend::Chain.new(I18n::Backend::KeyValue.new(Redis.current), I18n.backend)

Thanks! ❤️