Puppeteer: HTTP {value}
Fetching browserURL's /json/version endpoint returned a non-OK HTTP status.
Fetching browserURL’s /json/version endpoint returned a non-OK HTTP status.
Error message
HTTP {value}
{value} is replaced by the value shown in your error message.
How this error happens
browserURL must serve Chrome’s debugging metadata at /json/version. A regular website or a reverse proxy that denies that path can return an HTTP error instead.
The snippets use the imported puppeteer instance. The failing case assumes port 3000 returns a non-success status for /json/version.
await puppeteer.connect({
browserURL: "http://127.0.0.1:3000",
});
How to fix
Point browserURL at the running Chrome debugging service, not your application server.
const browser = await puppeteer.connect({
browserURL: "http://127.0.0.1:9222",
});
Things to keep in mind
The correction assumes Chrome is actually listening there. If a proxy is required, configure its authentication and routing deliberately. An HTTP 200 HTML page can fail JSON parsing instead.