macOS uses the Common Unix Printing System (CUPS). You can reset it via the browser.
cancel -a -x
Alternatively, you can also use the command prompt to clear the print queue:
Clearing the print queue is a standard, safe procedure that resolves most print hang scenarios. The command-line methods are most reliable when the GUI fails. Always run as administrator/root where required.
Sometimes, a print job might get stuck in the queue due to various reasons such as a paper jam, a canceled job that wasn't properly removed, or a printer error. Clearing the queue can help remove these stuck jobs and allow new print jobs to proceed.
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