undefined method `set' for an instance of ConnectionPool

[afuno]

When trying to update the project to Rails 7.1, the following problems began to arise in RSpec:

undefined method `set' for an instance of ConnectionPool

This occurs due to the call to the clear method in cache.clear. And cache in turn has this code:

cache = ActiveSupport::Cache::RedisCacheStore.new(
  redis: CurrentRedis.connection_pool,
  namespace: ...,
  expires_in: ...
)

connection_pool is:

@connection_pool ||= ConnectionPool.new(size: ..., timeout: ...) do
  Redis.new(**redis_args)
end

Please tell me, is this a problem in the configuration on my side or is it a problem in the ConnectionPool, which cannot work correctly in Rails 7.1? If the problem is in the configuration, then tell me how to fix it?