Why does Password reset url get into Phoenix.NotAcceptableError?

[MistaIA]

Greetings Seniors,

I installed Pow for auth, with email confirmation and password reset extensions along with the necessary configs, templates gen, routes, based on the doc.
Firstly, on browser pipe, the sign, signout work fine but not the password reset (email confirmation not tested yet).
The routes from pow_extension_routes allow to enable it as /reset-password/:id.

• Expected: enter email on password reset view, receive the mail with reset url which effectively redirects to password resetting view.

• Although it sends the mail, with the reset link like as /reset-password/<token>, going to that url gets into Phoenix.NotAcceptableError format expected one of ["html"]. Since it is a token with lots of dots.

But I can't determine whether it is my Phoenix based configuration, or a Pow based error, as it should be working and accept the endpoint according to docs, forums I went through.

• Config

config :myapp, :pow,
  user: MyApp.Users.User,
  repo: MyApp.Repo,
  web_module: MyAppWeb,
  web_mailer_module: MyAppWeb,
  mailer_backend: MyAppWeb.PowMailer,
  extensions: [PowEmailConfirmation, PowResetPassword],
  controller_callbacks: Pow.Extension.Phoenix.ControllerCallbacks,
  credentials_cache_store: {Pow.Store.CredentialsCache, reload: true}

• Routes

defmodule MyAppWeb.Router do
  use MyAppWeb, :router
  use Pow.Phoenix.Router
  use Pow.Extension.Phoenix.Router, extensions: [PowEmailConfirmation, PowResetPassword]

  pipeline :browser do
    plug :accepts, ["html"]         # The same server accept in every blogs and doc, but from the client header there are html, text, */* wildcards
    plug :fetch_session
    plug :fetch_live_flash
    plug :put_root_layout, html: {MyAppWeb.Layouts, :root}
    plug :protect_from_forgery
    plug :put_secure_browser_headers
  end

  pipeline :protected do
    plug Pow.Plug.RequireAuthenticated, error_handler: Pow.Phoenix.PlugErrorHandler
  end

  pipeline :api do
    plug :accepts, ["json"]
    plug MyAppWeb.Guard.APIAuthPlug, otp_app: :myapp
  end

  pipeline :api_protected do
    plug Pow.Plug.RequireAuthenticated, error_handler: MyAppWeb.Guard.APIAuthErrorHandler
  end

  pipeline :api_not_protected do
    plug Pow.Plug.RequireNotAuthenticated, error_handler: MyAppWeb.Guard.APIAuthErrorHandler
  end

  pipeline :admin do
    plug MyAppWeb.Guard.EnsureRolePlug, :admin
  end

  scope "/", MyAppWeb do
    pipe_through :browser

    get "/", PageController, :home
  end

  scope "/" do
    pipe_through :browser

    pow_session_routes()
    pow_extension_routes()
    resources "/registration", Pow.Phoenix.RegistrationController, singleton: true, only: [:edit, :update]
  end

  scope "/admin", MyAppWeb, as: :admin do
    pipe_through [:browser, :protected, :api, :api_protected, :admin]

    scope "/v1", API.V1, as: :v1 do
      get "/users", UserController, :index
    end
  end
...
end

• Logs

# Reset link example: http://localhost:4000/reset-password/SFMyNTY.MTJkNDliZWItZTg2My00ZDM3LTg2YzgtYzE5MDdjMDk5ODgz.kFRCfvdOSeEnupbbujdAKoaCuMXXk91qzZCUMrB43mw
[debug] ** (Phoenix.NotAcceptableError) unknown format "kFRCfvdOSeEnupbbujdAKoaCuMXXk91qzZCUMrB43mw", expected one of ["html"]
    (phoenix 1.7.21) lib/phoenix/controller.ex:1521: Phoenix.Controller.handle_params_accept/3
    (myapp 0.1.0) MyAppWeb.Router.browser/2
    (myapp 0.1.0) lib/myapp_web/router.ex:1: MyAppWeb.Router.__pipe_through0__/1
    (phoenix 1.7.21) lib/phoenix/router.ex:475: Phoenix.Router.__call__/5
    (myapp 0.1.0) lib/myapp_web/endpoint.ex:1: MyAppWeb.Endpoint.plug_builder_call/2       
    (myapp 0.1.0) deps/plug/lib/plug/debugger.ex:155: MyAppWeb.Endpoint."call (overridable 3)"/2
    (myapp 0.1.0) lib/myapp_web/endpoint.ex:1: MyAppWeb.Endpoint.call/2
    (phoenix 1.7.21) lib/phoenix/endpoint/sync_code_reload_plug.ex:22: Phoenix.Endpoint.SyncCodeReloadPlug.do_call/4

Please, any idea how to debug, or more resources? Thank you!