Error: `TypeError: Cannot read properties of undefined (reading 'User')` when invoking Copilot Coding Agent via VsCode Copilot chat

[mikhaelsantos]

Problem Statement

When invoking the following command in VS Code Copilot Chat:

#copilotCodingAgent add another ninja2

with the following input:

{
  "body": "Add another server configuration for 'ninja2' in the mcp.json file.",
  "existingPullRequest": null,
  "title": "Add ninja2 server configuration to mcp.json"
}

I receive the following error in the output:

TypeError: Cannot read properties of undefined (reading 'User')

This problem is viewed by other developers in our org trying to launch the coding agent via VSCode, but it has generated confusion because while it launches this error it does get the copilot agent to create a pr and work on the task.

Log Snippet

2025-09-03 10:39:14.786 [error] [Network] #6: https://api.github.com/copilot_internal/user - error GET Canceled
2025-09-03 10:41:25.151 [error] [Window] [LanguageModelToolsService#invokeTool] Error from tool github-pull-request_copilot-coding-agent with parameters {"body":"Add a new IAM user (ninja2@comp.com) to the iam.yaml configuration for onboarding.","existingPullRequest":null,"title":"Add IAM user ninja2"}:
Cannot read properties of undefined (reading 'User'): TypeError: Cannot read properties of undefined (reading 'User')
    at $d.invoke (/Users/loki/.vscode/extensions/github.vscode-pull-request-github-0.116.2/dist/extension.js:3123:2983)

Environment

• VS Code Version: 1.103.2 (Universal)
• Commit: 6f17636121051a53c88d3e605c491d22af2ba755
• OS: Darwin arm64 24.6.0
• GitHub Copilot: v1.364.0
• GitHub Copilot Chat: v0.30.3
• GitHub Pull Requests: v0.116.2
• Plan: Enterprise with copilot business license

Steps to Reproduce

1. Open VS Code with the specified extensions and versions.
2. Run the Copilot Coding Agent command to do a task
3. Observe the error in the output and logs.

Expected Behavior

The command should successfully trigger the Copilot Coding Agent and either create the pull request or provide a relevant response, without throwing a TypeError.

Actual Behavior

Launches the Agents work but a TypeError is thrown, referencing an undefined property User.

What was tried

• Uninstall and re-install all copilot plugins
• Sign out and sign in again
• Close and restart VScode

[joshspicer]

Thank you for the report @mikhaelsantos

@osortega looks like the type error is on this code, seemingly added for tests?

vscode-pull-request-github/src/lm/tools/copilotRemoteAgentTool.ts

Lines 136 to 138 in c9f0d89

	// API might not be available for tests, this guarantees we are still able to test
	const userAudience = vscode.LanguageModelPartAudience.User;
	lmResult.push(new vscode.LanguageModelDataPart2(data, 'application/pull-request+json', [userAudience]));