Unable to reset printing system on my MacBook Air M1 running macOS 15.5

You need to Control-Click (or two-finger click/tap) on the printer in the list or on the empty list, not in the side bar. Then you should see this popup:

A couple of other options.

You can use Print Center in Utilities, File -> Reset Printing System…

If all else fails, you can reset the printing system from the command line:

• Stop the CUPS daemon with the following command:

sudo launchctl stop org.cups.cupsd

• Rename the old CUPS configuration file:

sudo mv /etc/cups/cupsd.conf /etc/cups/cupsd.conf.backup

• Restore the default settings file:

sudo cp /etc/cups/cupsd.conf.default /etc/cups/cupsd.conf

• Rename the printers file:

sudo mv /etc/cups/printers.conf /etc/cups/printers.conf.backup

• Restart CUPS:

sudo launchctl start org.cups.cupsd

Hope this helps.

+1 see > Reset the printing system on your Mac to solve a problem - Apple Support

Then Add the printer > Add a printer to your printer list so you can use it on Mac - Apple Support

If the Mac and other devices are no longer seeing the Printer on your local Wi-Fi network..?

Go to the Epson printers on-screen menu and

1) make sure that it is connected to your local Wi-Fi network.

2) then if connected or after reconnecting, check for a Firmware update.