Error when checking elixir version

just finish, but more problems

victor@victor-Lenovo-Z50-75:~$ asdf plugin-add elixir GitHub - asdf-vm/asdf-elixir: Elixir plugin for asdf version manager
victor@victor-Lenovo-Z50-75:~$ asdf install elixir latest
==> Checking whether specified Elixir release exists…
==> Downloading 1.11.3-otp-23 to /tmp/elixir_build_72dqIW/elixir-precompiled-1.11.3-otp-23.zip
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 5725k 100 5725k 0 0 1162k 0 0:00:04 0:00:04 --:–:-- 1171k
==> Copying release into place
victor@victor-Lenovo-Z50-75:~$ elixir -v
No preset version installed for command elixir
Please install a version by running one of the following:

asdf install elixir master-otp-23

or add one of the following versions in your config file at /home/victor/.tool-versions
elixir 1.11.3-otp-23

I tried installing one more time

asdf install elixir master-otp-23
==> Checking whether specified Elixir release exists…
==> Downloading master-otp-23 to /tmp/elixir_build_KiAL55/elixir-precompiled-master-otp-23.zip
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 5787k 100 5787k 0 0 1166k 0 0:00:04 0:00:04 --:–:-- 1214k
==> Copying release into place
victor@victor-Lenovo-Z50-75:~$ elixir -v
No version set for command erl
Consider adding one of the following versions in your config file at /home/victor/.tool-versions
erlang 23.2.7

doesnt detect version, or command iex…