param is missing or the value is empty: itemの解消したい

前提・実現したいこと

ここに質問の内容を詳しく書いてください。
クローンのフリマアプリの購入機能でitem,buy,addressでFormオブジェクトを使用して複数のテーブルにデータを保存するところを作成しています。しかし、購入ボタンを押して、データを保存しようとしたら、「param is missing or the value is empty: item」のようなエラーが出ました。
もし良ければ、エラー解決の手助けをしていただきたいです。よろしくお願いします。
また、他のコードが必要な場合があればお申し付けください。

発生している問題・エラーメッセージ

ActionController::ParameterMissing in ItemsController#create
param is missing or the value is empty: item

def item_params
    params.require(:item).permit(:name, :explanation, :category_id, :state_id, :shipping_cost_id, :prefecture_id, :price,
                                 :shipping_day_id, :image).merge(user_id: current_user.id)
  end

該当のソースコード

ItemsCcontroller

ruby
1class ItemsController < ApplicationController
2  before_action :authenticate_user!, only: [:new, :edit, :update, :destroy]
3  before_action :set_item, only: [:show, :edit, :update, :destroy]
4  def index
5    @items = Item.all.order(created_at: :desc)
6  end
7
8  def new
9    @item = Item.new
10  end
11
12  def create
13    @item = Item.new(item_params)
14    if @item.save
15      redirect_to root_path
16    else
17      render :new
18    end
19  end
20
21  def show
22  end
23
24  def edit
25    unless current_user.id == @item.user_id
26      redirect_to root_path
27    end
28  end
29
30  def update
31    if @item.update(item_params)
32      redirect_to item_path
33    else
34      render :edit
35    end
36  end
37
38  def destroy
39    if current_user.id == @item.user_id 
40      if  @item.destroy
41        redirect_to root_path
42      else
43        render　:edit
44      end
45    else 
46      render :index
47    end
48  end
49
50  private
51
52  def item_params
53    params.require(:item).permit(:name, :explanation, :category_id, :state_id, :shipping_cost_id, :prefecture_id, :price,
54                                 :shipping_day_id, :image).merge(user_id: current_user.id)
55  end
56
57  def set_item
58    @item = Item.find(params[:id])
59  end
60end
61

buy_address.rb

ruby
1class BuyAddress
2  include ActiveModel::Model
3  attr_accessor :post_code, :prefecture_id, :city, :address, :building, :phone_number, :item_id, :user_id
4
5  with_options presence: true do
6    validates :post_code, format: {with: /\A\d{3}[-]\d{4}\z/}
7    validates :city, format: {with: /\A[ぁ-んァ-ン一-龥]/}
8    validates :address
9    validates :phone_number, format: {with: /\A\d{10}\z|\A\d{11}\z/}
10    validates :token
11  end
12
13  validates :prefecture_id, numericality: {other_than: 1}
14  
15  def save
16    buy = Buy.create(user_id: user_id, item_id: item_id)
17    Address.create(post_code: post_code, prefecture_id: prefecture_id, city: city, address: address, building: building, phone_number: phone_number, buy_id: buy_id)
18  end
19end

BuysController

ruby
1class BuysController < ApplicationController
2  def index
3    @buy_address = BuyAddress.new
4  end
5
6  def new
7  end
8
9  def create
10    @buy_address = BuyAddress.new(buy_params)
11    if @buy_address.valid?
12      @buy_address.save
13      redirect_to rootpath
14    else
15      render action: :index
16    end
17  end
18
19  private
20
21  def buy_params
22    params.permit(:post_code, :prefecture_id, :city, :address, :building, :phone_number, :item_id).merge(user_id: cuurent_user.id)
23  end
24end
25

buys/index.html.erb

<%= render "shared/second-header"%>

<div class='transaction-contents'>
  <div class='transaction-main'>
    <h1 class='transaction-title-text'>
      購入内容の確認
    </h1>
    <%# 購入内容の表示 %>
    <div class='buy-item-info'>
      <%= image_tag  @item.image, "item-sample.png", class: 'buy-item-img' %>
      <div class='buy-item-right-content'>
        <h2 class='buy-item-text'>
          <%= @item.naem %>
        </h2>
        <div class='buy-item-price'>
          <p class='item-price-text'>¥<%= @item.price %></p>
          <p class='item-price-sub-text'><%= @item.shipping_cost.name %></p>
        </div>
      </div>
    </div>
    <%# /購入内容の表示 %>

    <%# 支払額の表示 %>
    <div class='item-payment'>
      <h1 class='item-payment-title'>
        支払金額
      </h1>
      <p class='item-payment-price'>
        ¥<%= "販売価格" %>
      </p>
    </div>
    <%# /支払額の表示 %>

    <%= form_with model: [@item, @buy_address], url: items_path, id: 'charge-form', class: 'transaction-form-wrap',local: true do |f| %>
    <%# カード情報の入力 %>
    <div class='credit-card-form'>
      <h1 class='info-input-haedline'>
        クレジットカード情報入力
      </h1>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">カード情報</label>
          <span class="indispensable">必須</span>
        </div>
        <%= f.text_field 'hoge', class:"input-default", id:"card-number", placeholder:"カード番号(半角英数字)", maxlength:"16" %>
        <div class='available-card'>
          <%= image_tag 'card-visa.gif', class: 'card-logo'%>
          <%= image_tag 'card-mastercard.gif', class: 'card-logo'%>
          <%= image_tag 'card-jcb.gif', class: 'card-logo'%>
          <%= image_tag 'card-amex.gif', class: 'card-logo'%>
        </div>
      </div>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">有効期限</label>
          <span class="indispensable">必須</span>
        </div>
        <div class='input-expiration-date-wrap'>
          <%= f.text_area 'hoge', class:"input-expiration-date", id:"card-exp-month", placeholder:"例)3" %>
          <p>月</p>
          <%= f.text_area 'hoge', class:"input-expiration-date", id:"card-exp-year", placeholder:"例)23" %>
          <p>年</p>
        </div>
      </div>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">セキュリティコード</label>
          <span class="indispensable">必須</span>
        </div>
        <%= f.text_field "hoge",class:"input-default", id:"card-cvc", placeholder:"カード背面4桁もしくは3桁の番号", maxlength:"4" %>
      </div>
    </div>
    <%# /カード情報の入力 %>
    
    <%# 配送先の入力 %>
    <div class='shipping-address-form'>
      <h1 class='info-input-haedline'>
        配送先入力
      </h1>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">郵便番号</label>
          <span class="indispensable">必須</span>
        </div>
        <%= f.text_field :post_code, class:"input-default", id:"postal-code", placeholder:"例）123-4567", maxlength:"8" %>
      </div>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">都道府県</label>
          <span class="indispensable">必須</span>
        </div>
        <%= f.collection_select(:prefcture_id, Prefecture.all, :id, :name, {}, {class:"select-box", id:"prefecture"}) %>
      </div>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">市区町村</label>
          <span class="indispensable">必須</span>
        </div>
        <%= f.text_field :city, class:"input-default", id:"city", placeholder:"例）横浜市緑区"%>
      </div>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">番地</label>
          <span class="indispensable">必須</span>
        </div>
        <%= f.text_field :address, class:"input-default", id:"addresses", placeholder:"例）青山1-1-1"%>
      </div>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">建物名</label>
          <span class="form-any">任意</span>
        </div>
        <%= f.text_field :building, class:"input-default", id:"building", placeholder:"例）柳ビル103"%>
      </div>
      <div class="form-group">
        <div class='form-text-wrap'>
          <label class="form-text">電話番号</label>
          <span class="indispensable">必須</span>
        </div>
        <%= f.text_field :phone_number, class:"input-default", id:"phone-number", placeholder:"例）09012345678",maxlength:"11"%>
      </div>
    </div>
    <%# /配送先の入力 %>
    <div class='buy-btn'>
      <%= f.submit "購入" ,class:"buy-red-btn" %>
    </div>
    <% end %>
  </div>
</div>
<%= render "shared/second-footer"%>