Electrum Wallet: zero mBTC balance after sweeping private address
obv i would check the paper wallet address to make sure it is empty.

if it is, then i would input the tx id or the btc address into Blockchain and see what's up.
if you swept it correctly, then the funds are there somewhere.

also, if the amount swept was a lot and your fee was puny, be prepared to wait a very long time.

i see SO MANY NOOBS try to transact 5/10/40 btcs at once and pay a fee of $3!!!!!
not saying you did that....just saying