Error Indicator monitors for messages emitted through the global error event, console.error function and web requests completed with an HTTP status code that indicates the error.

This add-on is view only; it doesn't fix the error but logs it to help solve the issue yourself or when submitting a bug report, for instance. If you frequently browse with Firefox, chances are you have experienced some type of issue. Error Indicator gives you the details. When an error is detected, the add-on's icon will change from green to red. It will hold any found errors until you remove them.

Easy enough to use, providing potentially useful information.

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