If your Brother printer won’t print anything, then there must be some connectivity issue with the printer. To fix this issue, you can follow these steps:-
Make sure that the connection between the printer and the computer must be secure enough.
Try to restart your router and also restart your computer and your printer to let all the devices set up properly.
Make sure that the computer and the router are connected to the same router.
Make sure that the printer and the router both support the WPS feature.