Script errors can be difficult to track down because they are not descriptive. Script errors are intentionally designed this way for security reasons, but you do not need to know why a script error occurred to fix the problem.

When a script error occurs, you will usually see a message like this:

Script error messages are vague and there are many things that can cause these errors. Script errors indicate that a script on the website you are visiting is malfunctioning in some way. The script may not have run, failed while running, crashed, or something else may have happened.

In most cases, you don’t need to know why a script error occurred to fix it. Either you have a problem with the web browser, which you can fix, or the script is broken, which you can’t fix.