my mac laptop is suddenly unable to print to my canon wireless printer - get "No pages found." This seems to new from recent OS updates perhaps.

First try a shut down and restarting both the macbook and the printer.

If still having issues, try deleting the printer and reinstalling the printer.

How to Connect a Wireless Printer to Mac

1. Click the Apple icon in the top-left corner your screen.
2. Go to System Preferences.
3. Click on Printers and Scanners. ... 
4. Click the + sign below the list of printers. ... 
5. Select the printer you would like to add. ... 
6. Choose the printer's software or driver in the Use field. ... 
7. Finally, click Add.

Step 4 & 5 cannot be done because the list of printers is blank.