Undefined method each ....

class BankAccount
    attr_reader :name

    def initialize(name)
        @name = name
        @transactions = [] # I can't see anything here that should create a problem
    end

    def add_transaction(description, amount)
        @transactions.push(description: description, amount: amount)
    end

    def debit(description, amount)
        add_transaction(description, -amount)
    end

    def credit(description, amount)
        add_transaction(description, amount)
    end 

    def balance
        balance = 0.0
        @transactions.each do |transaction|
            balance += transaction[:amount]
        end 
        return balance
    end
end
one = 1

while one !=2

    puts("What do you want to do? 1. Open an account? 2. Debit an account? 3. Credit an account? 4. See an account history?")
    action = gets.chomp
        if action == '1' 
            puts("what is the name on the account?")
            nombre = gets
            puts("How much was the opening deposit?") 
            openingDeposit = Float(gets)
            createdAccount = BankAccount.new(nombre)
            createdAccount.credit("Opening Deposit", openingDeposit)
            puts("An account for #{createdAccount.name.chomp} was created with starting balance of #{createdAccount.balance}.")
        elsif action == '2'
            puts("Please provide a description of the transaction.")
            thisDescription = gets.chomp
            puts("Please enter an amount for the transaction")
            thisAmount = Float(gets)
            createdAccount.debit(thisDescription, thisAmount)
            puts("#{createdAccount.name.chomp}'s account has a current balance of #{createdAccount.balance}")
        elsif action == '3'
            puts("Please provide a description of the transaction.")
            thisDescription = gets.chomp
            puts("Please enter an amount for the transaction")
            thisAmount = Float(gets)
            createdAccount.credit(thisDescription, thisAmount)
            puts("#{createdAccount.name.chomp}'s account has a current balance of #{createdAccount.balance}")
        elsif action == '4'      #check this code block
            puts("Description: ".ljust(20) + "Balance ".rjust(10))

            @transactions.each do |transaction|        #    here is where the error is identified #by ruby
                puts(transaction[:description] + transaction[:amount])
            end
        else 
            puts("This is not a valid option. Please try again :)")
        end
        puts("Do you want to quit? Enter '2' to quit")
        one = Integer(gets)
end