Query Monitor

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wp_die() debugging with Query Monitor ​

The wp_die() output in WordPress is a thing of beauty... if you’re into minimalism.

Screenshot of the useless output of a call to wp_die()

Query Monitor adds some debugging information to the output of wp_die(), including the component responsible and the call stack, to help you identify the source of the message:

Screenshot of a slightly more useful output of a call to wp_die() with Query Monitor enabled