写真の投稿にネストしているコメントを、どうしても削除できないです……

undefined method `join' for #Hash:0x00007fbd3f839560

class CommentsController < ApplicationController
  def new
    @photo = Photo.find(params[:photo_id])
    comments = Comment.all
    comment = Comment.new
  end

  def create
    @photo = Photo.find(params[:photo_id])
    comment = Comment.new(comment_params)
    if comment.save
      ActionCable.server.broadcast 'comment_channel', content: comment
    end
    render :json => comment
  end

  def destroy
    comment = Comment.find(id: params[:id], photo_id: params[:photo_id])
    if comment.destroy
      redirect_to photo_path
    end
  end

  private

  def comment_params
    params.require(:comment).permit(:text).merge(user_id: current_user.id,photo_id: params[:photo_id])
  end
end

class PhotosController < ApplicationController
  before_action :find_params, except: [:index, :new, :create]
  before_action :authenticate_user!, only: [:new, :edit]


  def index
    @photos = Photo.order(created_at: :desc)
  end

  def new
    @photo = Photo.new
  end

  def create
    @photo = Photo.new(post_params)
    if @photo.save
      redirect_to root_path
    else
      render :new
    end
  end

  def show
    @comment = Comment.new
    @comments = @photo.comments.includes(:user)
  end

  def edit
  end

  def update
    if @photo.update(post_params)
      redirect_to root_path
    else
      render :edit
    end
  end

  def destroy
    if @photo.destroy
      redirect_to root_path
    end
  end

  private

  def find_params
    @photo = Photo.find(params[:id])
  end

  def post_params
    params.require(:photo).permit(:image, :title, :category_id).merge(user_id: current_user.id)
  end
end

<div class="show-comments">
<div class="submit-comment">
 <% if user_signed_in? %>
  <%= form_with(model:[@photo,  @comment]) do |f| %>
    <%= f.text_field :text, class:"submit-field" %>
    <%= f.submit "ボケる" , class:"submit-btn" %>
  <% end %>
 <% else %>
   <strong><p>※※※ コメントの投稿には新規登録/ログインが必要です ※※※</p></strong>
 <% end %>
 </div>
 <h1 class="list-comment">みんなのボケ一覧</h1>
 <div class="comments", id='comments'>
    <% @comments.reverse_each do |comment| %>
      <div class="comment-area", id="comment-area">
        <p class="comment"><%= comment.text %></p>
        <p class="comment-user"><%= comment.user.nickname %></p>
      </div>
      <% if user_signed_in? && current_user.id %>
        <%= link_to "削除", photo_comment_path(comment.photo_id, comment.id), method: :delete, class:"show-delete-btn", id:"show-delete-btn" %>
      <% end %>
    <% end %>
 </div>
</div>

Rails.application.routes.draw do
  get 'comments/new'
  devise_for :users
  root to: "photos#index"
  resources :photos do
    resources :comments, only:[:new, :create, :destroy]
  end
  resources :users
end

class Comment < ApplicationRecord
  belongs_to :photo
  belongs_to :user

  validates :text, presence: true
end

class Photo < ApplicationRecord
  has_one_attached :image
  belongs_to :user
  has_many :comments

  extend ActiveHash::Associations::ActiveRecordExtensions
  belongs_to :category

  with_options presence: true do
    validates :title
    validates :image
    validates :category_id , numericality: { other_than: 0 }
  end

end

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable

  with_options presence: true do
    validates :last_name
    validates :first_name
    validates :nickname, length: { maximum: 8 }
    validates :email, uniqueness: {case_sensitive: true}
    validates :password, length: { minimum: 6 }, format: { with: /\A(?=.*?[a-z])(?=.*?\d)[a-z\d]+\z/i }
  end

  has_many :photos
  has_many :comments
end