ユーザー情報を記入して登録ボタンを押すとエラーが出る

以前に作ったフリマアプリにdeviseで新しくadmin_userテーブルを作成し、ユーザー登録をしたところ新規のユーザーは作られたが、エラーが出てトップページに戻れずエラーが出てしまいます。

以下エラー画面
https://gyazo.com/7746eba08a9b2d0b7e7b26c1a7001b7d

controllers/admin_users/registrationscontroller
1class AdminUsers::RegistrationsController < Devise::RegistrationsController
2   before_action :configure_sign_up_params, only: [:create]
3  # before_action :configure_account_update_params, only: [:update]
4
5  # GET /resource/sign_up
6  # def new
7  #   super
8  # end
9
10  # POST /resource
11  # def create
12  #   super
13  # end
14
15  # GET /resource/edit
16  # def edit
17  #   super
18  # end
19
20  # PUT /resource
21  # def update
22  #   super
23  # end
24
25  # DELETE /resource
26  # def destroy
27  #   super
28  # end
29
30  # GET /resource/cancel
31  # Forces the session data which is usually expired after sign
32  # in to be expired now. This is useful if the user wants to
33  # cancel oauth signing in/up in the middle of the process,
34  # removing all OAuth session data.
35  # def cancel
36  #   super
37  # end
38
39  # protected
40
41  # If you have extra params to permit, append them to the sanitizer.
42   def configure_sign_up_params
43     devise_parameter_sanitizer.permit(:sign_up, keys: [:admin_name])
44   end

html
1<%= render "shared/second-header"%>
2
3<%= form_with model: @admin_user, url: admin_user_registration_path, class: 'registration-main', local: true do |f| %>
4<div class='form-wrap'>
5  <div class='form-header'>
6    <h1 class='form-header-text'>
7      企業様情報入力
8    </h1>
9  </div>
10
11  <%= render 'shared/error_messages', model: f.object %>
12
13  <div class="form-group">
14    <div class='form-text-wrap'>
15      <label class="form-text">企業様名</label>
16      <span class="indispensable">必須</span>
17    </div>
18    <%= f.text_area :admin_name, class:"input-default", id:"nickname", placeholder:"例) furima太郎", maxlength:"40" %>
19  </div>
20  <div class="form-group">
21    <div class='form-text-wrap'>
22      <label class="form-text">メールアドレス</label>
23      <span class="indispensable">必須</span>
24    </div>
25    <%= f.email_field :email, class:"input-default", id:"email", placeholder:"PC・携帯どちらでも可", autofocus: true %>
26  </div>
27  <div class="form-group">
28    <div class='form-text-wrap'>
29      <label class="form-text">パスワード</label>
30      <span class="indispensable">必須</span>
31    </div>
32    <%= f.password_field :password, class:"input-default", id:"password", placeholder:"6文字以上の半角英数字" %>
33    <p class='info-text'>※英字と数字の両方を含めて設定してください</p>
34  </div>
35  <div class="form-group">
36    <div class='form-text-wrap'>
37      <label class="form-text">パスワード(確認)</label>
38      <span class="indispensable">必須</span>
39    </div>
40    <%= f.password_field :password_confirmation, class:"input-default", id:"password-confirmation", placeholder:"同じパスワードを入力して下さい" %>
41  </div>
42
43  <div class="form-group">
44    <h2 class='form-bottom-text'>
45      「会員登録」のボタンを押すことにより、
46      <span>利用規約</span>
47      <br>に同意したものとみなします
48    </h2>
49  </div>
50  <div class='register-btn'>
51    <%= f.submit "会員登録" ,class:"register-red-btn" %>
52  </div>
53  <p class='register-info'>本人情報の登録について</p>
54</div>
55<% end %>
56
57<%= render "shared/second-footer"%>

route.rb
1Rails.application.routes.draw do
2  devise_for :admin_users, controllers: {
3    sessions:      'admin_users/sessions',
4    passwords:     'admin_users/passwords',
5    registrations: 'admin_users/registrations'
6  }
7  devise_for :users
8  root to: 'items#index'
9  resources :users, only: [:show, :edit, :update] 
10  resources :users, only: :show
11  resources :items do
12    resources :virtual_fittings, only: [:index]
13    resources :orders, only: [:index, :create]
14  end
15end