按着这个教程撘私有链: w* ]$ [# _4 N8 r3 }2 v
结果第一步就报错啦( J7 ]9 ], V$ j/ Y$ n- ~( G
这是
5 D, \6 I# W" f' Rgenesis.json:8 e# X8 C+ }5 x, Z; ~* P

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1. {
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2.   "coinbase"   : "0x0000000000000000000000000000000000000000",
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3.   "difficulty" : "0x400",! E0 ~- D8 `! w7 z9 \4 C
   
4.   "extraData"  : "0x0",. q" R2 y9 v5 k2 g2 }1 W# y; N
   
5.   "gasLimit"   : "0x2fefd8",7 `# X7 {) h( F9 G
   
6.   "nonce"      : "0xdeadbeefdeadbeef",
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7.   "mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",% z/ V0 ~% d, U  T( p. o
   
8.   "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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9.   "timestamp"  : "0x00",6 z: U- F  A1 f9 L$ f3 P/ |8 T
   
10.   "alloc"      : {}3 n7 _: e- Q" h4 o8 [1 W9 Z
    
11. }

复制代码

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然而启动的时候：
, _( x) t  G5 J) z) i- N4 B, nwangyideMacBook-Pro:eth vincent$  geth --datadir data0 init genesis.json
/ z% i+ R5 D* w& D2 b% aFatal: invalid genesis file: json: cannot unmarshal hex string of odd length into Go struct field Genesis.extraData of type hexutil.Bytes9 i6 F. @$ w! f2 w
wangyideMacBook-Pro:eth vincent$
, y% |! B4 ^2 S4 @. v. p0 F1 v+ L哪位大神能帮帮我？