danielmiessler/Fabric · info · Error

No file selected

Error message

No file selected

What it means

session-store.importFromFile throws 'No file selected' when the file-open dialog resolves without a file — the user cancelled the picker or it was dismissed. This is a control-flow signal more than a failure: nothing was imported and nothing is wrong.

Source

Thrown at web/src/lib/store/session-store.ts:78

      sessions.set([]);
    }
  },

  async exportToFile(messages: Message[]) {
    try {
      await saveToFile(messages, 'session-history.json');
      toastService.success('Session exported successfully');
    } catch (error) {
      toastService.error('Failed to export session');
      throw error;
    }
  },

  async importFromFile(): Promise<Message[]> {
    try {
      const file = await openFileDialog('.json');
      if (!file) {
        throw new Error('No file selected');
      }

      const content = await readFileAsJson<Message[]>(file);
      if (!Array.isArray(content)) {
        throw new Error('Invalid session file format');
      }

      toastService.success('Session imported successfully');
      return content;
    } catch (error) {
      toastService.error(error instanceof Error ? error.message : 'Failed to import session');
      throw error;
    }
  },

  async loadSessionMessages(sessionName: string): Promise<Message[]> {
    try {
      const response = await fetch(`/api/sessions/${sessionName}`);

View on GitHub (pinned to 338b89cfe9)

Solutions

1. Treat this as cancellation: catch it (or check the message) and return quietly instead of toasting an error
2. Distinguish cancel from real failures by returning a sentinel from the dialog wrapper instead of throwing

Example fix

// before
const file = await openFileDialog('.json');
if (!file) {
  throw new Error('No file selected');
}

// after
const file = await openFileDialog('.json');
if (!file) {
  return []; // user cancelled; nothing to import
}

const file = await openFileDialog('.json');
if (!file) return []; // user cancelled — nothing to do

function isCancelError(e: unknown): boolean {
  return e instanceof Error && e.message === 'No file selected';
}

try { messages = await importFromFile(); }
catch (e) {
  if (isCancelError(e)) return; // silent — cancellation is not an error
  toast.error('Import failed');
}

When it happens

Trigger: User clicks Cancel/Escape in the .json file picker; dialog closed without a selection; openFileDialog returning undefined/null on cancellation.

Common situations: Any import flow where cancellation is a normal path but the code treats a missing file as an error, showing an error toast for a simple cancel.

Related errors

• STREAMING_BLOCKED

AI-assisted analysis of danielmiessler/Fabric@338b89cfe9 (2026-08-15). Data as JSON: /api/errors/e59a59b86645084c. Report an issue: GitHub.