Can you confirm which specific commit that you are using? Perhaps you didn’t run mix elixir_ls.release after running git pull. I ask because ElixirLS is currently on 0.7.0 (your stack trace lists 0.6.0) and it looks like you’re running into this OTP 24 compatibility error: Compatibility with OTP 24 · Issue #503 · elixir-lsp/elixir-ls · GitHub
Which was fixed in March:
https://github.com/elixir-lsp/elixir-ls/pull/504
