Hi,
Are you using macOS Mojave 10.14 (in your profile)? Is it a Wi-Fi network with a router (with the printer, computer, and all devices connected to the same network)?
The Epson XP-15000 is mentioned in About AirPrint - Apple Support as a printer supporting the driverless AirPrint technology, so a separate driver would not be needed. Software from the printer manufacturer may or may not add functionality. AirPrint should appear in the Use: field when adding a network printer.
Add a printer on Mac - Apple Support
AirPrint would also be used by iPhones/iPads.
Have you tried to reset the printing system (Reset the Mac printing system to solve a problem - Apple Support)?
If you for some reason wish to use separate drivers, a fresh driver download could possibly be tested (if necessary, select another operating system):
https://www.epson.eu/support?productID=21506&language=en&os=35#drivers_and_manuals
https://epson.com/Support/Printers/Single-Function-Inkjet-Printers/XP-Series/Epson-XP-15000/s/SPT_C11CG43201?review-filter=macOS+10.14.x
The European and American printer drivers can be slightly different.