ユーザーの新規登録をしようとするとActionController::InvalidAuthenticityToken in UsersController#create とエラーが出てしまいます

ユーザーの新規登録をしようとするとActionController::InvalidAuthenticityToken in UsersController#create
とエラーが出てしまいます

new.html.erb

<%= form_tag("users/create", method: :post) do %>
  <input name = "name">
  <input name = "email">
  <input type = "password" name = "password">
  <input type="submit" value="サインイン">
<% end %>

users_controller.rb

class UsersController < ApplicationController
  def new
    
  end
  
  def create
    @user = User.new(name: params[:name], email: params[:email], password: params[:password])
    @user.save
    redirect_to("/")
  end
  
end

routes.rb

Rails.application.routes.draw do
  get 'signup' => "users#new"
  post "users/create" => "users#create"
  get "users/destroy" => "users#destroy"
  get "login" => "users#login_form"
  post "logout" => "users#logout"
  resources :posts
  root 'welcome#index'
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

エラー文
ActionController::InvalidAuthenticityToken in UsersController#create
ActionController::InvalidAuthenticityToken
Extracted source (around line #211):
       

        def handle_unverified_request
          raise ActionController::InvalidAuthenticityToken
        end
      end
    end

createアクションに問題があることぐらいしかわかりません(T ^ T)
似たような質問を探してみたのですが、答えが見つからず悪戦苦闘しています
誰か助けてください＞＜