Go to definition does not work: Error while indexing: undefined method `required_positionals' for #<RBS::Types::UntypedFunction

[fabioxgn]

Description

Go to definition always worked on my vscode and it stopped for some time now, I also see the error below in a popup every time a open the project.

Ruby LSP Information

VS Code Version

1.94.2

Ruby LSP Extension Version

0.8.8

Ruby LSP Server Version

0.17.16

Ruby LSP Addons

• Ruby LSP Rails

Ruby Version

3.2.3

Ruby Version Manager

asdf

Installed Extensions

Click to expand

• gitlens (15.6.2)
• EditorConfig (0.16.4)
• prettier-vscode (11.0.0)
• copilot (1.242.0)
• copilot-chat (0.21.2)
• vscode-edit-csv (0.10.0)
• haml (1.4.1)
• vscode-rdbg (0.2.2)
• rainbow-csv (3.12.0)
• vscode-duplicate (1.2.1)
• vscode-kubernetes-tools (1.3.18)
• black-formatter (2024.4.0)
• debugpy (2024.12.0)
• python (2024.16.1)
• vscode-pylance (2024.10.1)
• javascript-test-runner (0.2.0)
• vscode-yaml (1.15.0)
• ruby-extensions-pack (0.1.12)
• ruby-lsp (0.8.8)
• sorbet-vscode-extension (0.3.37)

Ruby LSP Settings

Click to expand

Workspace

{
  "indexing": {
    "excludedPatterns": [
      "**/spec/**/*.rb"
    ]
  }
}

User

{
  "enableExperimentalFeatures": false,
  "enabledFeatures": {
    "codeActions": true,
    "diagnostics": true,
    "documentHighlights": true,
    "documentLink": true,
    "documentSymbols": true,
    "foldingRanges": true,
    "formatting": true,
    "hover": true,
    "inlayHint": true,
    "onTypeFormatting": true,
    "selectionRanges": true,
    "semanticHighlighting": true,
    "completion": true,
    "codeLens": true,
    "definition": true,
    "workspaceSymbol": true,
    "signatureHelp": true,
    "typeHierarchy": true
  },
  "featuresConfiguration": {},
  "addonSettings": {},
  "rubyVersionManager": {
    "identifier": "auto"
  },
  "customRubyCommand": "",
  "formatter": "auto",
  "linters": null,
  "bundleGemfile": "",
  "testTimeout": 30,
  "branch": "",
  "pullDiagnosticsOn": "both",
  "useBundlerCompose": false,
  "bypassTypechecker": false,
  "rubyExecutablePath": "",
  "indexing": {
    "excludedPatterns": [
      "**/spec/**/*.rb"
    ]
  },
  "erbSupport": true
}

Reproduction steps

1. Start the Ruby LSP using csv
2. Open a Ruby file
3. A popup shows the error below
4. Try to use "Go to definition" to a simple thing like the User model
5. Go to definition doesn't work "No definition found for 'User"

Code snippet or error message

Error while indexing: undefined method `required_positionals' for #<RBS::Types::UntypedFunction:0x0000000118984e78 @return_type=#<RBS::Types::Bases::Any:0x0000000118984ec8 @location=#<RBS::Location:21340 buffer=/Users/fabiogomes/.asdf/installs/ruby/3.2.3/lib/ruby/gems/3.2.0/gems/rbs-3.6.1/core/method.rbs, start=138:19, pos=4835...4842, children= source="untyped">>>

[andyw8]

This is a duplicate of #2630. You're using an outdated version of the Ruby LSP server (gem).

[andyw8]

(some other dependency in your project may be constraining the Ruby LSP version, which would be why you've only started seeing this).

[vinistock]

Thank you for the report! As Andy mentioned this problem has already been fixed in v0.18.4, so it's likely that the ruby-lsp gem is failing to update for some reason.

There are some instructions and more context here.

Please let us know if you hit any issues while upgrading it.