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Real User Error Monitoring

DebugBear RUM lets you track JavaScript errors your visitors encounter on your website.

Enable error monitoring​

Error monitoring is disabled by default for RUM snippets that have been set up after late October 2024.

If you have an older RUM snippet you need to click Enable error tracking in the RUM Configuration tab and update the embed code on your website.

UI to enable RUM error monitoring

What error messages are tracked on the page?​

DebugBear RUM error monitoring reports two types of page errors:

  • JavaScript exceptions
  • Unhandled promise rejections

The following errors from the browser DevTools console won't be reported in RUM:

  • Console messages like console.error calls
  • SVG parser errors
  • Failed network requests

RUM error monitoring dashboard​

You can find the error dashboard by clicking on Errors in the sidebar when viewing your RUM data. It will show the total number of errors reported over time.

RUM error dashboard

Viewing common error messages and locations​

Error monitoring includes the following three fields on each page view:

  • First Error Message
  • First Error Script URL
  • First Error Function Name

When viewing aggregated data only the first error that occurred on the page is considered, even if multiple errors occurred on the page.

You can open the Table view and group by error message to see common errors on your website.

RUM error message count

Viewing errors on a specific page view​

When viewing specific page views you can see when errors occurred in the Timeline tab. Up to three errors are recorded.

In addition to the error message, script URL, and function name, you can also see a line and column number.

Page view with errors

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