We have analysed your problem, Seems your Scanner Device is not communicatin with the computer. May i know whether the computer is connected through Wired or wireless?
If it is connected through wire, Kindly turn off your printer. Unplug all the cables and reconnect all the cables and also turn on your printer . Check now you might get the test print now.
If it is wireless, Kindly verify whether the printer is connected in our Home Network.
if it was already working fine, Do power cycle on your Router.