Blockchain development (vi) based on Ethereum Development FAQs __ Blockchain

1. Using Geth startup in a private chain environment, the following questions are indicated:

Updated Mining Threads  threads=0
INFO [08-17|21:31:30] Transaction pool price threshold Updated price= 18000000000
error[08-17|21:31:30] cannot start mining without etherbase    err= "Etherbase address must be Explicitly specified "
error:etherbase missing:etherbase address must being explicitly specified at
    web3.js : 3104:20 at
    web3.js:6191:15 @
    web3.js:5004:36 at
    <anonymous>:1:1

Because the current environment does not have an account, you need to create an account

Eth.newaccount returns NULL, this issue occurs when you start Miner.start ()

Resolution: Personal.newaccount ("xxx"), here to create a new account, note that some students have questions before the account Ah, how not now, maybe you start geth path has a problem,

The path is wrong, the account here is also incorrect oh, check carefully.