I am receiving an error message regarding the access of an ets table “1st argument: the table identifier does not refer to an existing ETS table”. I am not trying to access an ets table. The very simple code segment is below

##  program to fetch api prog from json place holder
defmodule Tst22api do
    IO.gets "in Tst22api"
    def fetch_user do
 	IO.puts("before HTTPoison")
	IO.gets "in fetch_user"
        {:ok, response} = HTTPoison.get("https://jsonplaceholder.typicode.com/users/1")
	IO.inspect(response)
 	IO.puts("after HTTPoison")
        response
    end
end

Tst22api.fetch_user()

I am receiving the error message upon the execution of the line of code below.

{:ok, response} = HTTPoison.get("https://jsonplaceholder.typicode.com/users/1")

If I type this line of code in iex following the project load “iex -S mix” (minus the tst22api.ex module) the json API is fetched and displayed. If i include the tst22api.ex module in the iex -S mix (project load) the error message above is encountered. The {:ok, response} tuple in the HTTPoison.get command is somehow triggering the ets.lookup_element function in the tst22api.ex module but not when it is typed in iex as an isolated command (after the project load, iex -S mix (minus the tst22api.ex module))? I am relatively new to Elixir and any insights would be greatly appreciated.