jackwener/OpenCLI · error · CommandExecutionError

Failed to export the generated Gemini image

Error message

Failed to export the generated Gemini image

What it means

Once image URLs are detected, gemini image exports them via exportGeminiImages (fetching data URLs); if export returns no assets despite URLs being found, it throws CommandExecutionError('Failed to export the generated Gemini image') with a hint to verify visibility and retry. This surfaces a download/export-stage failure separate from generation itself.

Source

Thrown at clis/gemini/image.js:107

        const effectivePrompt = buildImagePrompt(prompt, {
            ratio,
            style: style || undefined,
        });
        if (startFresh)
            await startNewGeminiChat(page);
        const beforeUrls = await getGeminiVisibleImageUrls(page);
        await sendGeminiMessage(page, effectivePrompt);
        const urls = await waitForGeminiImages(page, beforeUrls, timeout);
        const link = await currentGeminiLink(page);
        if (!urls.length) {
            throw new EmptyResultError('gemini image', `No generated image was detected. Open ${link} and check whether Gemini produced one.`);
        }
        if (skipDownload) {
            return [{ status: '🎨 generated', file: '📁 -', link: `🔗 ${link}` }];
        }
        const assets = await exportGeminiImages(page, urls);
        if (!assets.length) {
            throw new CommandExecutionError('Failed to export the generated Gemini image', `Open ${link} and verify the image is visible, then retry.`);
        }
        const stamp = Date.now();
        const results = [];
        for (let index = 0; index < assets.length; index += 1) {
            const asset = assets[index];
            const base64 = asset.dataUrl.replace(/^data:[^;]+;base64,/, '');
            const suffix = assets.length > 1 ? `_${index + 1}` : '';
            const filePath = path.join(outputDir, `gemini_${stamp}${suffix}${extFromMime(asset.mimeType)}`);
            await saveBase64ToFile(base64, filePath);
            results.push({ status: '✅ saved', file: `📁 ${displayPath(filePath)}`, link: `🔗 ${link}` });
        }
        return results;
    },
});

View on GitHub (pinned to 49907e53dc)

Solutions

1. Open the link in the message, confirm the image is fully visible, then rerun the command (retry often succeeds once rendering completes)
2. Increase --timeout so the image finishes loading before export is attempted
3. If it persists consistently, check whether the Gemini DOM changed and update/patch exportGeminiImages selectors
4. Skip download with the sd flag to confirm generation works and isolate the export stage

Example fix

// before
opencli gemini image --prompt "a castle" --timeout 15   // export fails, image still loading
// after
opencli gemini image --prompt "a castle" --timeout 90

// Prefer skip-download to isolate generation from export
await run(['gemini','image','--prompt',p,'--timeout','120','--sd']); // verify generation works first

function hasAssets(a){ return Array.isArray(a) && a.length > 0 && a.every(x => typeof x.dataUrl === 'string' && x.dataUrl.startsWith('data:')); }

try {
  return await run(['gemini','image','--prompt',p,'--timeout','120']);
} catch (e) {
  if (String(e.message).includes('Failed to export the generated Gemini image')) {
    await sleep(5000); // let the image finish loading
    return await run(['gemini','image','--prompt',p,'--timeout','180']);
  }
  throw e;
}

When it happens

Trigger: Image elements were seen but their data could not be extracted: image not fully loaded when fetched, blob/src mutated between detection and export, network failure retrieving the data URL, or Gemini DOM change breaking the export extraction.

Common situations: Clicking/downloading too early while the image is still streaming; flaky network dropping the image fetch; Gemini UI update altering image element attributes the exporter relies on; large images timing out mid-extraction.

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AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/d3ab984ce334e71d. Report an issue: GitHub.