按着这个教程撘私有链
结果第一步就报错啦
这是
genesis.json:

1. {
   
2.   "coinbase"   : "0x0000000000000000000000000000000000000000",
   
3.   "difficulty" : "0x400",
   
4.   "extraData"  : "0x0",
   
5.   "gasLimit"   : "0x2fefd8",
   
6.   "nonce"      : "0xdeadbeefdeadbeef",
   
7.   "mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
   
8.   "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
   
9.   "timestamp"  : "0x00",
   
10.   "alloc"      : {}
    
11. }

Copy the Code

然而启动的时候：
wangyideMacBook-Pro:eth vincent$  geth --datadir data0 init genesis.json
Fatal: invalid genesis file: json: cannot unmarshal hex string of odd length into Go struct field Genesis.extraData of type hexutil.Bytes
wangyideMacBook-Pro:eth vincent$
哪位大神能帮帮我？