Error Code: -5, Invalid private key encoding for Litecoin Private Key

[nitikeshd]

I am using litecore-lib in nodejs.

Code:

Code: 
var pkey = new litecore.PrivateKey();
var address = pkey.toAddress();

spawn('litecoin-cli',['importprivkey',pkey]);

But it gives me Error Message:

error code: -5
error message:
Invalid private key encoding

Please Help!!?

Reference: https://github.com/litecoin-project/litecore-lib/blob/master/docs/examples.md#generate-a-random-address

[achow101]

The private key is not a WIF string currently. You just have a PrivateKey object. You need to get the WIF string of the private key.