コメントの保存について

コメント機能の実装を行っている最中ですが,コメントを送信しようとすると保存されずルーティングエラーになりました。

prototypescontroller

class PrototypesController < ApplicationController
  #CSRF保護を無効にする
  protect_from_forgery with: :null_session
  before_action :move_to_index, except: [:index, :show]
  def index
    @prototype = Prototype.all
  end

  def new
    @prototype = Prototype.new
  end

  def create
    @prototype = Prototype.new(prototype_params)
    
    if @prototype.save
      redirect_to root_path(@prototype)
    else
      render :new
      @prototype = Prototype.includes(:user)
    end
  end

  def show
    @prototype = Prototype.find(params[:id])
    @comment = @prototype.comment.new(comment_params)
    @comments = @prototype.comments.includes(:user)
  end

  def edit
    @prototype = Prototype.find(params[:id])
  end

  def update
    @prototype = Prototype.find(params[:id])
    @prototype.update(prototype_params)
    if @prototype.save
      redirect_to root_path(@prototype)
    else
      render :edit
    end
  end

   def destroy
    prototype = Prototype.find(params[:id])
    prototype.destroy
    redirect_to root_path
   end

   private
   def prototype_params
    params[:prototype].permit(:title, :catch_copy, :concept, :image).merge(user_id: current_user.id)
   end
   
   def move_to_index
    unless user_signed_in?
      redirect_to action: :index
    end
  end

  def move_to_update
    unless user_signed_in?
      redirect_to action: :index 
    end
  end

  def move_to_destroy
    unless user_signed_in?
      redirect_to action: :index
    end
  end

end

comments_controller.rb

class CommentsController < ApplicationController

def create
  @comment = Comment.new(comment_params)
  if @comment.save
    redirect_to prototype_path(@comment.prototype)
  else
    @prototype = @comment.prototype
    @comment = @prototype.comment
    render :"prototypes/show"
  end

end

private
   def comment_params
    params[:comment].permit(:text, :prototype, :user).merge(user_id: current_user.id,  prototype_id: params[:prototype_id])
   end
end

routes.rb

Rails.application.routes.draw do
  devise_for :users
  root to: "prototypes#index"
  resources :prototypes, only: [:index, :new, :create, :show, :edit, :update, :destroy]
  resources :comments, only: [:create, :show]
end

試したこと
routes.rbの記述に全角スペースがないか確認した。