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☔️ Protocol error (Tracing.start): Tracing is already started

See original GitHub issue

NOTICE FOR DUPLICATE BUG FILERS: The only known fix for this is usually completely restarting the browser, and sometimes with a completely fresh profile.

Lighthouse Version: 1.2.2 Chrome Version: 57.0.2937.0 Error Message: Protocol error (Tracing.start): Tracing is already started Stack Trace:

   at ExtensionConnection.handleRawError (chrome-extension://blipmdconlkpinefehnmjammfjpmpbjk/scripts/lighthouse-background.js:7377:11)
   at Object.chrome.debugger.sendCommand.result [as callback] (chrome-extension://blipmdconlkpinefehnmjammfjpmpbjk/scripts/lighthouse-background.js:7526:33)
   at safeCallbackApply (extensions::sendRequest:21:15)
   at handleResponse (extensions::sendRequest:74:7)```

Issue Analytics

State:
Created 7 years ago
Reactions:4
Comments:22 (8 by maintainers)

Top GitHub Comments

2reactions

mssodhicommented, Jan 24, 2019

Here’s an attached screen shot from www.yahoo.com site audit. Tested on Version 73.0.3681.0 (Official Build) canary (64-bit). The error message says “Something went wrong with recording the trace over your page load. Please run Lighthouse again.”, in case that helps. I’ve quit/closed the app, and restarted, and it still happens. screen shot 2019-01-23 at 4 49 04 pm

2reactions

paulirishcommented, Sep 18, 2018

@jamesshannon it does yes. 😃

chromium location

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