The Developer tab is a hub for information and tools to expedite the debugging process. Prime among these tools is the Stacktrace, which shows you the JavaScript files where an issue appears and identifies the line(s) of code throwing the error.
However, Noibu is sometimes unable to detect a JavaScript file to associate to an issue, and may return a blank Stacktrace. This is usually because the line of code that triggered the error is a script implemented in the HTML, and not in a JavaScript file.
To find problematic code without the help of the Stacktrace, try these steps:
- Go to the URL where the error occurred. This should be listed in the Stacktrace, even if there are no stackframes.
- Open the Developer Console and click into the Elements tab.
- Use CTRL-F to search for a relevant keyword. You can pull this from the Error Signature or Error Message.
- Based on the screenshot above, you might search for
classList.
- Based on the screenshot above, you might search for
- Use the error message and the code snippet to understand the root cause.
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