I have the same problem. After a seemingly correct print, the printer will display a check mark indicating a successful print but not return to its "ready" state. After a while, the printer starts making little clicking noises and the next time I try to print I get an error. Sometimes that page with one like (quoted in earlier posts) gets printed all by itself. Sometimes it's at the top of my next print job. Sometimes, the print queue shows 13 or 14 jobs that have already been printed. I was forced to use Epson's Driver Support tool the last time I tried to troubleshoot and got charged $9.99 with no warning! This is a problem on my 4100 and XP-6000.
I also tried clearing the check mark by pressing OK on the control panel. The display seemed to be normal but it did not stop the error message appearing the next time.
The only thing that seems to work is to turn off the printer after a successful print. That restores the state of the printer to "ready". You also have to turn off the printer when you power down or reboot your pc.
I am running Windows 11 on a Dell Inspiron 16 2-1. It's a problem with something Microsoft has done in Windows 11 that printer drivers apparenty know nothing about. I have reported the problem to Epson with no response. The cost in wasted paper is awful and the annoyance is through the roof.