Hello,
Sometimes when a printer runs out of paper, the print job gets stuck even after you reload the paper.
Does the printer's LCD screen indicate any error? Sometimes you have to press the OK or continue button, depending on the model, to resume the print job.
Otherwise, please try turning off the printer, unplugging it for 30 seconds, then plugging it back in.
If that doesn't help, go to Settings > Bluetooth & devices > Printers & scanners, select your printer, and open the print queue. Cancel any stuck print jobs, then try printing again.
If the issue persists, please let me know the brand and model of your printer. Also, are you seeing any error messages or blinking lights?