CODEWITHSUNDEEP
javascriptplaywright
Ashik
Ashik

Reputation: 3418

Playwright Error: Firefox revision is not downloaded. Run "npm install" or "yarn install"

const playwright = require("playwright");

(async () => {
  const browsers = ["chromium", "firefox", "webkit"];

  for (const browserType of browsers) {
    const browser = await playwright[browserType].launch({args: ['--no-sandbox']});
    const context = await browser.newContext();
    const page = await context.newPage("http://whatsmyuseragent.org/");

    await page.screenshot({ path: `example-${browserType}.png` });
  }
})();

after running this script, I got

UnhandledPromiseRejectionWarning: Error: Firefox revision is not 
downloaded. Run "npm install" or "yarn install" in the console.

How to fix it?

Upvotes: 5

Views: 1834

Answers (2)

Max Schmitt
Max Schmitt

Reputation: 3152

You can use the Playwright CLI to install the browsers:

npx playwright install

The reason that the revisions can't be found is mostly due that NPM's cache is not configured properly when node_modules are e.g. cached on some CI environment. Since NPM thinks Playwright is installed but the actual browsers are stored in another location. See here for reference.

Upvotes: 0

Ashik
Ashik

Reputation: 3418

After using npm in place of yarn the issue is resolved.

Upvotes: 2

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