jackwener/OpenCLI · error · EmptyResultError

No NotebookLM sources were found on the current page.

Error message

No NotebookLM sources were found on the current page.

What it means

opencli notebooklm source-list throws this EmptyResultError when a notebook page is open but both the RPC-based listing (listNotebooklmSourcesViaRpc, errors swallowed to []) and the DOM fallback (listNotebooklmSourcesFromPage) returned zero rows. There are genuinely no sources visible to the adapter.

Source

Thrown at clis/notebooklm/source-list.js:28

    domain: NOTEBOOKLM_DOMAIN,
    strategy: Strategy.COOKIE,
    browser: true,
    navigateBefore: false,
    args: [],
    columns: ['title', 'id', 'type', 'size', 'created_at', 'updated_at', 'url', 'source'],
    func: async (page) => {
        await requireNotebooklmSession(page);
        const state = await getNotebooklmPageState(page);
        if (state.kind !== 'notebook') {
            throw new EmptyResultError('opencli notebooklm source-list', 'No NotebookLM notebook is open in the adapter session. Run `opencli notebooklm open <notebook>` first.');
        }
        const rpcRows = await listNotebooklmSourcesViaRpc(page).catch(() => []);
        if (rpcRows.length > 0)
            return rpcRows;
        const domRows = await listNotebooklmSourcesFromPage(page);
        if (domRows.length > 0)
            return domRows;
        throw new EmptyResultError('opencli notebooklm source-list', 'No NotebookLM sources were found on the current page.');
    },
});

View on GitHub (pinned to 49907e53dc)

Solutions

  1. Add a source (`opencli notebooklm add-source`) if the notebook is truly empty.
  2. Reopen/reload the notebook (`opencli notebooklm open <notebook>`) and retry after the UI settles.
  3. Retry after a delay; if both strategies keep failing on a non-empty notebook, update opencli to match the current NotebookLM UI/RPC.

Example fix

// before
opencli notebooklm source-list   # empty notebook
// after
opencli notebooklm add-source "overview.md"
opencli notebooklm source-list
Defensive patterns

Strategy: fallback

Validate before calling

const sources = await exec('opencli notebooklm source-list --json');
if (!Array.isArray(sources) || sources.length === 0) {
  console.warn('No sources listed — notebook may be empty or still loading');
}

Type guard

function hasSources(rows) {
  return Array.isArray(rows) && rows.length > 0 && typeof rows[0]?.id === 'string';
}

Try / catch

let sources = [];
try {
  sources = await run('opencli notebooklm source-list');
} catch (err) {
  if (/No NotebookLM sources were found/.test(err.message)) {
    await run('opencli notebooklm open', [notebook]);
    await delay(3000);
    sources = await run('opencli notebooklm source-list').catch(() => []);
  } else {
    throw err;
  }
}

Prevention

When it happens

Trigger: source-list on an empty notebook; both listing strategies fail during page load/animation; NotebookLM UI change breaks DOM selectors while the RPC endpoint errors; sources section collapsed/not rendered at scrape time.

Common situations: Newly created empty notebook; flaky network preventing the internal batchexecute RPC; adapter outdated after a NotebookLM frontend update; scraping raced ahead of the source panel rendering.

Related errors


AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/106d283121c9bb5a. Report an issue: GitHub.