ARTICLE AD BOX
I am seeing the following error message:
localhost:4200 says
❌ Error: Could not find Chrome (ver. 148.0.7778.97). This can occur if either
you did not perform an installation before running the script (e.g. `npx puppeteer browsers install chrome`) or
your cache path is incorrectly configured (which is: /opt/render/.cache/puppeteer).
For (2), check out our guide on configuring puppeteer at https://pptr.dev/guides/configuration.
Here's the code from server.js:
* ═══════════════════════════════════════════ PDF ENGINE ═══════════════════════════════════════════ */ /** * Opens the dashboard URL in a headless browser, waits for it to fully * render, then exports it as an A4 PDF to `storage/reports/<fileName>`. * * @param {string} url - Full URL Puppeteer should visit * @param {string} token - JWT stored in localStorage so the page authenticates * @param {string} fileName - Output filename (no path, just "Report_xxx.pdf") * @returns {Promise<string>} - Resolves with fileName on success */ async function generateDashboardPDF(url, token, fileName) { // const browser = await puppeteer.launch({ // headless: 'new', // args: [ // '--no-sandbox', // '--disable-setuid-sandbox', // '--disable-dev-shm-usage', // prevents crashes on low-memory VMs // '--disable-gpu', // ], // }); const browser = await puppeteer.launch({ headless: 'new', // Windows path – change to match your actual Chrome install executablePath: process.env.CHROME_PATH || 'C:\\Users\\admin\\.cache\\puppeteer\\chrome\\win64-148.0.7778.167\\chrome-win64\\chrome.exe', args: [ '--no-sandbox', '--disable-setuid-sandbox', '--disable-dev-shm-usage', '--disable-gpu', ], }); const page = await browser.newPage(); try { const origin = new URL(url).origin; // 1. Land on the origin first so we can write localStorage await page.goto(origin, { waitUntil: 'domcontentloaded', timeout: 60_000 }); await page.evaluate(t => localStorage.setItem('token', t), token); // 2. Navigate to the real report page await page.setViewport({ width: 1400, height: 1800 }); await page.goto(url, { waitUntil: 'networkidle2', timeout: 90_000 }); // 3. Strip UI chrome that should not appear in the PDF await page.addStyleTag({ content: ` .report-toolbar, .btn-primary, .mat-icon, .btn-whatsapp, input, button { display: none !important; } #pdf-root { box-shadow: none !important; margin: 0 !important; width: 100% !important; border: none !important; } body { background: white !important; overflow: hidden !important; } `, }); // 4. Wait for Angular to finish rendering await page.waitForSelector('#pdf-root', { timeout: 30_000 }); await new Promise(r => setTimeout(r, 5_000)); // allow charts/animations to settle // 5. Write PDF const pdfPath = path.join(reportsDir, fileName); await page.pdf({ path: pdfPath, format: 'A4', printBackground: true, margin: { top: '10mm', right: '10mm', bottom: '10mm', left: '10mm' }, }); // 6. Sanity-check: reject obviously empty files const { size } = fs.statSync(pdfPath); if (size < 5_000) { throw new Error(`Generated PDF is suspiciously small (${size} bytes). The page may not have rendered correctly.`); } console.log(`✅ PDF created: ${fileName} (${(size / 1024).toFixed(1)} KB)`); return fileName; } finally { await browser.close(); } }