I earlier created paper wallet with this GitHub - adityapk00/zecpaperwallet: Zcash Sapling Paper Wallet Generator tool v1.2 and sent money to that address. How now I can spend this money? I have two private keys: one is started with “secret-extended-key-main…” and other just private key for t-address. When I enter first key to Zecwallet Lite v 1.8.8 it shows “Loading…” and gives no reaction, and with second key it shows error “The input key was not recognized as either a sapling spending key or a sapling viewing key” . What to do? or funds lost forever?