Evnu focused on backend stability improvements for the elixir-lang/expert repository, addressing a startup crash that occurred when opening .exs files outside a Mix project. By refining Elixir code to safely handle cases where the root_uri parameter is nil, Evnu aligned the application’s behavior with the LSP InitializeParams specification. This technical approach prevented crashes in single-file mode, improving reliability and reducing support overhead. The work did not introduce new features but enhanced the debugging workflow for engineers working with Elixir. Through careful backend development, Evnu contributed a targeted fix that lays the foundation for future enhancements in single-file scenarios.