@Facundo I can confirm that! Just <upgraded> my MacBook Air M1 to BigSur - and the next thing I noticed was that ElixirLS fails to start in VSCode
my .zshrc is good as is my asdf local elixir 1.12.0
I may have installed asdf with brew first - but my current installation is tucked away safely in $HOME/.asdf 
Tried iex from CLI only to learn that elixir wasn’t the issue at all - erl was! (Note: I run all my workbench stuff in containers which is probably why I haven’t noticed)
Once I got my asdf global erlang 24.1 out of the way - all was good in VSCode on macOS BigSur land 
