Why do I get `sealing paused while waiting for transactions` error when mining in Ethereum private network?

I launched a private network by using geth --datadir data/node1 --http --dev --http.corsdomain "*" --http.api web3,eth,debug,personal,net,miner --allow-insecure-unlock --mine command.

I am able to attach to it geth attach http://localhost:8545

but the balance of the default account is only 1.15 ether:

eth.getBalance(eth.accounts[0]) 1.15792089237316195423570985008687907853269984665640564039457582226449518702905e+77

I'd like to give it more ethers so I run:

miner.start() null And I can see there is a warn in the node log:

INFO [11-28|20:29:38.512] Transaction pool price threshold updated price=1
INFO [11-28|20:29:38.512] Commit new mining work                   number=4 sealhash=73b6e7..5d8b72 uncles=0 txs=0 gas=0 fees=0 elapsed="174.436µs"
WARN [11-28|20:29:38.512] Block sealing failed                     err="sealing paused while waiting for transactions"

I wonder what the issue could be?

Solution

Perhaps you have not previously given permission for the miner to sign the genesis block. POA uses the Clique API to manage the seal list.

> clique.proposals
{}
> clique.propose("0xc077f8420d5b6c125897d9c5e21293ff6f77855c", true)
true
> clique.proposals
{
  0xc077f8420d5b6c125897d9c5e21293ff6f77855c: true
}
> clique.getSnapshot()
{
  hash: "0xfbfe67cd638d21f528036130cc703be8f8fdccb934d871f3f8c2eccda1ed4bf5",
  number: 11,
  recents: {
    10: "0xc077f8420d5b6c125897d9c5e21293ff6f77855c",
    11: "0x726794b16f6c5b0be0b78d7713a876ed3da8be1a"
  },
  signers: {
    0x726794b16f6c5b0be0b78d7713a876ed3da8be1a: {},
    0xc077f8420d5b6c125897d9c5e21293ff6f77855c: {}
  },
  tally: {},
  votes: []
}`enter code here`
enter code here

You can see more details in this manual: https://yenhuang.gitbooks.io/blockchain/content/interact-with-private-chain-on-android/build-the-private-chain.html

You can also top up your balance using:

eth.sendTransaction({from:eth.coinbase, to:eth.accounts[1], value: web3.toWei(0.05, "ether")})