(Protocol.UndefinedError) protocol Enumerable not implemented for :timeout of type Atom

[iampeter]

In Zed, when using next-ls, I am getting the following error:

2024-08-23T10:42:01.49206899+09:30 [WARN] Generic lsp request to Next LS failed: ** (Protocol.UndefinedError) protocol Enumerable not implemented for :timeout of type Atom. This protocol is implemented for the following type(s): DBConnection.PrepareStream, DBConnection.Stream, Date.Range, Exqlite.Stream, File.Stream, Function, GenEvent.Stream, HashDict, HashSet, IO.Stream, Jason.OrderedObject, List, Map, MapSet, Range, Stream
    (elixir 1.17.2) lib/enum.ex:1: Enumerable.impl_for!/1
    (elixir 1.17.2) lib/enum.ex:166: Enumerable.reduce/3
    (elixir 1.17.2) lib/enum.ex:4423: Enum.reject/2
    (next_ls 0.23.2) lib/next_ls.ex:244: NextLS.handle_request/2
    (gen_lsp 0.10.0) lib/gen_lsp.ex:350: anonymous fn/2 in GenLSP.loop/3
    (telemetry 1.2.1) /Users/runner/work/next-ls/next-ls/deps/telemetry/src/telemetry.erl:321: :telemetry.span/3
    (gen_lsp 0.10.0) lib/gen_lsp.ex:349: anonymous fn/7 in GenLSP.loop/3
    (gen_lsp 0.10.0) lib/gen_lsp.ex:553: GenLSP.attempt/4

[tomekowal]

I am getting the exact same message.
Looking at the source code, the :timeout result is unhandled here:
https://github.com/elixir-tools/next-ls/blob/main/lib/next_ls.ex#L244
Another question is what causes the timeout.

Lexical also does not work for me out of the box right now. The only language server that seems to be working out of the box is the default elixir-ls

[littleStudent]

I have the same issue in vscode and cursor for 2-3 months now already. Can we provide any additional information / help?

[paskudnyprogramista]

Any news for this issue?

In my case I have following error when I compile in Zed:

 (Protocol.UndefinedError) protocol Enumerable not implemented for :timeout of type Atom. This protocol is implemented for the following type(s): DBConnection.PrepareStream, DBConnection.Stream, Date.Range, Exqlite.Stream, File.Stream, Function, GenEvent.Stream, HashDict, HashSet, IO.Stream, Jason.OrderedObject, List, Map, MapSet, Range, Stream
    (elixir 1.17.2) lib/enum.ex:1: Enumerable.impl_for!/1
    (elixir 1.17.2) lib/enum.ex:166: Enumerable.reduce/3
    (elixir 1.17.2) lib/enum.ex:4423: Enum.reject/2
    (next_ls 0.23.2) lib/next_ls.ex:244: NextLS.handle_request/2
    (gen_lsp 0.10.0) lib/gen_lsp.ex:350: anonymous fn/2 in GenLSP.loop/3
    (telemetry 1.2.1) /private/tmp/next-ls-20240822-9161-v6wlf1/next-ls-0.23.2/deps/telemetry/src/telemetry.erl:321: :telemetry.span/3
    (gen_lsp 0.10.0) lib/gen_lsp.ex:349: anonymous fn/7 in GenLSP.loop/3
    (gen_lsp 0.10.0) lib/gen_lsp.ex:553: GenLSP.attempt/4