Argon2_elixir on Windows 10: running out of ideas

If you do this:

:io.format('~ts',[[69,82,84,83,95,73,78,67,76,85,68,69,95,80,65,84,72,61,99,58,47,80,114,111,103,114,97,109,32,70,105,108,101,115,47,8226,32,80,114,111,103,114,97,109,109,105,110,103,47,69,114,108,97,110,103,47,101,114,116,115,45,49,48,46,53,47,105,110,99,108,117,100,101]])

It will print

ERTS_INCLUDE_PATH=c:/Program Files/• Programming/Erlang/erts-10.5/include

which shows that your Erlang is installed in a path with both a space and a unicode character. argon does not seem to like this at all.