Rails 7 - Database configuration does not specify adapter

[leoplct]

I am using Ruby on Rails 7 with multiple databases. I got this error.

1. I tried with:adapter: net_http but it isn't recognized.
2. Removing this line it doesn't raise exception but it doesn't connect to the secondary database.
   How do I say to connect to the secondary database (ams) instead of primary ?

app/models/ams_record.rb
connects_to database: { writing: :ams, reading: :ams }

/Users/name/.rvm/gems/ruby-3.1.2/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:261:in `resolve_pool_config':

database configuration does not specify adapter (ActiveRecord::AdapterNotSpecified)

database.yml

default_ams: &default_ams
  timeout: 60
  open_timeout: 3

development:
  primary:
    <<: *default
    database: xxx_development
    password: password
    host: localhost
    port: 5432
  ams:
    <<: *default_ams
    database: ams_development
    username: default
    password: XXXX
    url: https://xxx.us-east-1.aws.clickhouse.cloud:8443

app/models/click_house_record.rb

class ClickHouseRecord < ActiveRecord::Base
  self.abstract_class = true

  class << self
    def agent
      ClickHouse.connection
    end

    def insert(*argv, &block)
      agent.insert(table_name, *argv, &block)
    end

    def select_one
      agent.select_one(current_scope.to_sql)
    end

    def select_value
      agent.select_value(current_scope.to_sql)
    end

    def select_all
      agent.select_all(current_scope.to_sql)
    end

    def explain
      agent.explain(current_scope.to_sql)
    end
  end
end

app/models/ams_record.rb

class AmsRecord < ClickHouseRecord
  self.abstract_class = true

  connects_to database: { writing: :ams, reading: :ams }

end

app/models/ams_traffic.rb

class AmsTraffic < AmsRecord
   # This is my table on Click House
end