toeverything/AFFiNE · error

Selected sources cannot be synchronized

Error message

Selected sources cannot be synchronized

What it means

Guard in waitForSelectedSources fired when the AIRequestService was constructed without a syncSelectedSources callback, so selected doc sources can never be synchronized with the copilot backend. Indicates a wiring/misconfiguration of the AI request service, not a user error.

Source

Thrown at packages/frontend/core/src/blocksuite/ai/runtime/request/service.ts:64

    context(): string;
  };
  private activeEditorGeneration = 0;
  private activeEditorActivation = Promise.resolve();
  private lastActionSessionId = '';
  private readonly actionHistory: {
    action: AIActionId;
    options: AIActionOptions;
  }[] = [];
  readonly actionEvents$ = new Subject<AIRequestActionEvent>();

  constructor(
    readonly client: CopilotClientType,
    private readonly syncSelectedSources?: (docIds: string[]) => Promise<void>
  ) {}

  async waitForSelectedSources(docIds: string[]) {
    if (!this.syncSelectedSources) {
      throw new Error('Selected sources cannot be synchronized');
    }
    let timeout: ReturnType<typeof setTimeout> | undefined;
    try {
      await Promise.race([
        this.syncSelectedSources(docIds),
        new Promise<never>((_, reject) => {
          timeout = setTimeout(
            () =>
              reject(new Error('Selected source synchronization timed out')),
            15000
          );
        }),
      ]);
    } finally {
      if (timeout) clearTimeout(timeout);
    }
  }

View on GitHub (pinned to b4c8548c09)

Solutions

1. Re-select the sources and retry; the previous selection became stale.
2. Refresh the document/source list before synchronizing.

When it happens

Trigger: Thrown in AIRequestService.waitForSelectedSources when no syncSelectedSources callback was provided, so user-selected documents cannot be synced to the server before the AI request.

Common situations: Appears when the AI chat panel is used in a context where source synchronization is not wired up. Ensure the service is constructed with a syncSelectedSources implementation.

AI-assisted analysis of toeverything/AFFiNE@b4c8548c09 (2026-08-18). Data as JSON: /api/errors/802fff25a6651a6e. Report an issue: GitHub.