How can I use Chrome's Developer Tools to get more information about a 500 error?

Open Chrome's Developer Tools (right-click on the page and select 'Inspect' or press F12). Go to the 'Network' tab, refresh the page, and examine the request that's returning the 500 error. Look at the 'Response' tab for any error messages provided by the server. The 'Headers' tab might also contain clues. While often limited, this can sometimes provide more specific details than the generic 500 message.