Error when running main_proxy: could not start Cowboy2 adapter, missing option :key/:keyfile

[hawkyre]

I'm getting the following error when running this proxy.

22:24:25.238 [notice] Application main_proxy_app exited: MainProxyApp.Application.start(:normal, []) returned an error: shutdown: failed to start child: MainProxyApp.Proxy
** (EXIT) an exception was raised:
** (ArgumentError) could not start Cowboy2 adapter, missing option :key/:keyfile

I just set up a new umbrella project for my server and can't run it due to this. This is the proxy file

defmodule MainProxyApp.Proxy do
  use MainProxy.Proxy

  @impl MainProxy.Proxy
  def backends do
    [
      %{
        domain: Application.get_env(:main_proxy_app, :language_league_api_server_url),
        plug: LLServer.Web.Router
      }
    ]
  end
end

any idea on how to fix it?

[johnnyMick]

Here is my fix for the issue for an umbrella project
you can open iex also in your project directory with PROXY_SERVER=false iex -S mix

# Config Main Proxy
# this is need to stop from starting poxy server, in iex -S mix
maybe_server = System.get_env("PROXY_SERVER") || "true"
config :main_proxy,
  server: maybe_server === "true", # This is required for the proxy to work
  force_ssl: [hsts: true], # force SSL
  # http: [port: 4000],
  https: [
    port: 4001,
    otp_app: :app, # umbrella project
    compress: true,
    cipher_suite: :strong,
    certfile: "priv/cert/selfsigned.pem",
    keyfile: "priv/cert/selfsigned_key.pem"
  ]

and then you will need to specify your other app to load in https or the assets will load in http

config :app2, App2.Endpoint,
  server: false, # This is required for the proxy to work
  force_watchers: true, # forces your watchers to start even when the `:server` option is set to `false`
  force_ssl: [hsts: true], # force SSL
  https: [cipher_suite: :strong],  # force SSL
  url: [host: "my-app.local"],
  static_url: [host: "my-app.local"],
  
  
config :app3, App3.Endpoint,
  server: false, # This is required for the proxy to work
  force_watchers: true, # forces your watchers to start even when the `:server` option is set to `false`
  force_ssl: [hsts: true], # force SSL
  https: [cipher_suite: :strong],  # force SSL
  url: [host: "admin.my-app.local"],
  static_url: [host: "my-app.local"],