Thank you for the hint!
I would like to elaborate a bit more here to assist others facing a similar problem.
I have changed mix.exs by adding in deps:
{:hackney, github: “benoitc/hackney”, override: true}
Moreover, I have modified the usage of HTTPoison to set the options, e.g.:
options = [ssl: [{:versions, [:“tlsv1.2”]}]]
{:ok, %HTTPoison.Response{body: body, headers: _headers}} =
HTTPoison.get(, , options)
(UPDATE)
It seems that the change in the mix.exs file is not necessary.
