VS Code Autocomplete / Intellisense not working

Questions & Help Questions
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Intellisense is not working for me for Elixir in VSCode.
The only suggestions that are made are from words in the current file - “words” as per the intellisense definition, https://code.visualstudio.com/docs/editor/intellisense#_types-of-completions
So, no methods, nothing from Elixir standard modules, etc.
VScode Python Intellisense is working ok.
OS: Windows 11

This is View|Output|ElixirLS:

Installing ElixirLS release v0.15.1
Running in c:/Users/david/Exercism/elixir/triangle
Install complete

This is the output from Developer Tools|Console:

WARN [ms-vscode.remote-server]: The viewsWelcome contribution in 'ms-vscode.remote-server' requires 'enabledApiProposals: ["contribViewsWelcome"]' in order to use the 'group' proposed property.
console.ts:137 [Extension Host] ElixirLS: Loading extension
console.ts:137 [Extension Host] ElixirLS: activating extension in mode SINGLE_FOLDER
console.ts:137 [Extension Host] ElixirLS: Workspace folders are Array(1)
console.ts:137 [Extension Host] ElixirLS: Workspace is undefined
console.ts:137 [Extension Host] ElixirLS: creating test controller
console.ts:137 [Extension Host] ElixirLS: extension activated
log.ts:421  INFO [perf] Render performance baseline is 20ms
console.ts:137 [Extension Host] ElixirLS: starting LSP client for c:\Users\david\Exercism\elixir\triangle with server options Object client options Object

This is my settings.json:

{
    // Controls if quick suggestions should show up while typing
    "editor.quickSuggestions": {
        "other": true,
        "comments": false,
        "strings": false
    },
    "editor.suggestSelection": "first",
    "vsintellicode.modify.editor.suggestSelection": "automaticallyOverrodeDefaultValue",
    "files.autoSave": "afterDelay",
    "terminal.integrated.defaultProfile.windows": "Git Bash",
    "git.autofetch": true,
    "csv-edit.fontSizeInPx": 12,
    "workbench.colorTheme": "Visual Studio Dark",
    "explorer.confirmDelete": false,
    "explorer.confirmDragAndDrop": false,
    "editor.formatOnSave": true,
    "python.formatting.provider": "black",
    "outline.showVariables": false,
    "editor.accessibilitySupport": "off",
    "[python]": {
        "editor.formatOnType": true
    },
    "[elixir]": {
        "editor.insertSpaces": true,
        "editor.tabSize": 2,
        "editor.wordBasedSuggestions": true,
        "editor.formatOnType": true,
        "editor.trimAutoWhitespace": false,
        "files.trimTrailingWhitespace": true,
        "files.insertFinalNewline": true,
        "files.trimFinalNewlines": true
    },
    "launch": {
        
        "configurations": [],
        "compounds": []
    }
}