Post route not found

[rubypirate]

Missing POST Route for Form Submission in Backpex Admin

I'm encountering a routing issue while trying to create a new post using Backpex admin interface. Here are the details:

Environment

• Elixir: 1.14
• Phoenix: 1.7.14
• LiveView: 1.0.0-rc.1
• Backpex: 0.7.1

Router

defmodule AppWeb.Router do
  use AppWeb, :router

  import Backpex.Router
  import AppWeb.UserAuth

  pipeline :browser do
    plug :accepts, ["html"]
    plug :fetch_session
    plug :fetch_live_flash
    plug :put_root_layout, html: {AppWeb.Layouts, :root}
    plug :protect_from_forgery
    plug :put_secure_browser_headers
    plug :fetch_current_user
    plug Backpex.ThemeSelectorPlug
  end

  pipeline :api do
    plug :accepts, ["json"]
  end

  scope "/", AppWeb do
    pipe_through :browser

    get "/", PageController, :home
  end

  scope "/admin", AppWeb do
    pipe_through :browser
    backpex_routes()

    live_session :default, on_mount: Backpex.InitAssigns do
      live_resources "/posts", Live.PostLive
    end
  end
end

Steps to Reproduce

1. Created a new Phoenix application
2. Set up Backpex following the installation guide
3. Navigated to /admin/posts (displays correctly)
4. Attempted to submit a new post form

Current Behavior

Receiving error: no route found for POST /admin/posts/new (AppWeb.Router)

Expected Behavior

Form should submit successfully and create a new post.

Additional Information

• Verified all configuration steps from the installation guide
• Tested with the official Backpex demo repository and encountered the same issue

Available Routes

POST  /admin/backpex_cookies                    Backpex.CookieController :update
GET   /admin/posts                              DemoWeb.PostLive :index
GET   /admin/posts/new                          DemoWeb.PostLive :new
GET   /admin/posts/:backpex_id/edit             DemoWeb.PostLive :edit
GET   /admin/posts/:backpex_id/show             DemoWeb.PostLive :show

Any assistance would be appreciated.