microsoft/vscode · error · Error

Mission Control session creation failed: ${res.status} ${res

Error message

Mission Control session creation failed: ${res.status} ${res.statusText} - ${body}

What it means

Error "Mission Control session creation failed: ${res.status} ${res.statusText} - ${body}" thrown in microsoft/vscode.

Source

Thrown at extensions/copilot/src/extension/chatSessions/copilotcli/node/missionControlApiClient.ts:102

		repoId: number,
		agentTaskId: string,
		authOptions: McAuthOptions,
	): Promise<McSessionCreateResult> {
		const { url, headers } = await this._buildRequest(SESSIONS_PATH, authOptions);
		const res = await this._fetcherService.fetch(url, {
			callSite: 'copilotcli.mc.createSession',
			method: 'POST',
			headers,
			json: {
				owner_id: ownerId,
				repo_id: repoId,
				agent_task_id: agentTaskId,
			},
			timeout: REQUEST_TIMEOUT_MS,
		});
		if (!res.ok) {
			const body = await res.text().catch(() => '');
			throw new Error(`Mission Control session creation failed: ${res.status} ${res.statusText} - ${body}`);
		}
		const data = await res.json() as { id: string; task_id?: string };
		return { id: data.id, taskId: data.task_id ?? agentTaskId };
	}

	/**
	 * Submit a batch of events to a Mission Control session, optionally
	 * acknowledging completed steering command ids in the same request.
	 *
	 * Returns `true` on success; logs and returns `false` on failure so the
	 * caller can re-queue events.
	 */
	async submitEvents(
		sessionId: string,
		events: readonly McEvent[],
		completedCommandIds: readonly string[],
	): Promise<boolean> {
		try {

View on GitHub (pinned to a94b963a32)

When it happens

Trigger: Thrown at extensions/copilot/src/extension/chatSessions/copilotcli/node/missionControlApiClient.ts:102 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/vscode@a94b963a32 (2026-08-12). Data as JSON: /api/errors/df4c72711d575811. Report an issue: GitHub.