I am guessing it is a really old application
So this is the mix.exs
defmodule Yuri.Mixfile do
use Mix.Project
def project do
[app: :yuri,
version: "0.0.1",
elixir: "~> 1.2",
elixirc_paths: elixirc_paths(Mix.env),
compilers: [:phoenix, :gettext] ++ Mix.compilers,
build_embedded: Mix.env == :prod,
start_permanent: Mix.env == :prod,
aliases: aliases(),
deps: deps()]
end
# Configuration for the OTP application.
#
# Type `mix help compile.app` for more information.
def application do
[mod: {Yuri, []},
applications: [:phoenix, :phoenix_pubsub, :phoenix_html, :cowboy, :logger, :gettext,
# :postgrex,
:phoenix_ecto, :csv, :parallel_stream,
:con_cache, :deep_merge, :calendar]]
end
# Specifies which paths to compile per environment.
defp elixirc_paths(:test), do: ["lib", "web", "test/support"]
defp elixirc_paths(_), do: ["lib", "web"]
# Specifies your project dependencies.
#
# Type `mix help deps` for examples and options.
defp deps do
[
{:phoenix, "~> 1.2.1"},
{:phoenix_pubsub, "~> 1.0"},
{:phoenix_ecto, "~> 3.0"},
# {:postgrex, ">= 0.0.0"},
{:phoenix_html, "~> 2.6"},
{:phoenix_live_reload, "~> 1.0", only: :dev},
{:gettext, "~> 0.11"},
{:cowboy, "~> 1.0"},
{:distillery, "~> 0.10"},
{:csv, "~> 1.4.2"},
{:con_cache, "~> 0.11.1"},
{:deep_merge, "~> 0.1.1"},
# {:gmail, "~> 0.1", git: "git://github.com/craigp/elixir-gmail"},
{:calendar, ">= 0.17.4"}
]
end
# Aliases are shortcuts or tasks specific to the current project.
# For example, to create, migrate and run the seeds file at once:
#
# $ mix ecto.setup
#
# See the documentation for `Mix` for more info on aliases.
defp aliases do
["ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
"ecto.reset": ["ecto.drop", "ecto.setup"],
"test": ["ecto.create --quiet", "ecto.migrate", "test"]]
end
end
Then when I do mix phoenix.server it kind of runs but I get
Running Yuri.Endpoint with Cowboy using http://localhost:4000
You have configured application :yuir in your configuration file,
but the application is not available.
This usually means one of:
1. You have not added the application as a dependency in a mix.exs file.
2. You are configuring an application that does not really exist.
Please ensure :yuir exists or remove the configuration.
But it looks to be defined in there 
But this seams to be confirmed by the logs which says
[error] no process: the process is not alive or there's no process currently associated with the given name, possibly because its application isn't started
In the browser I get a white screen with plain text that says sales today.
I am so sorry I really don’t know what is going on here at all
