Elixir postgrex error - Could not start application postgrex: could not find application file: postgrex.app

If you get postgrex error above, please open a file called "mix.exs" and look for application and remove postgrex from your list as shown below.

# Type `mix help compile.app` for more information.

def application do

[mod: {HelpOn, []},

applications: [:phoenix, :phoenix_pubsub, :phoenix_html, :cowboy, :logger, :gettext,

:phoenix_ecto, postgrex]] <-- div="" error="" here="">

end