Help with litecoin core

I have a few paper wallets that I made a few years ago. I wanted to start to send a recieve litecoin to get the hang of it. I saw a few YouTube videos, on the console page I type the inportprikey then the paper wallet privaykeys enter but get an error -s

beware of paperwallets… have you checked the address containing the funds?

Yes I checked they have the funds

By the address what do you mean?

I had to type the private key in looks like the ready glasses help lol. Thanks

Reading glasses