Some times, your HP printers may run into PCL XL error because of which, certain documents become impossible to be printed. If your computer is also showing a message that it cannot print a certain document, then first of all, you should try to locate the disk of the printer and reinstall the driver. You can also go to the website of the manufacturer and download it from there.

Your computer may be set up using the universal drivers for communicating with the printer and this may lead to a PCL XL error. Therefore, you need to download the exact drivers for the printer you are using.
To fix any PCL XL errors, you can also disable some additional printing features like Advanced printing features and print optimizations. This may not repair the error by itself but may allow printing to be done without going through the error message.

You can also use registry cleaner for fixing PCL XL errors so that the printer can start working again.