按着这个教程撘私有链$ _/ a, ]0 g+ t! M: {, N: Y
结果第一步就报错啦
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genesis.json:; d0 {5 r+ z0 f% d+ y9 G1 u3 b

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1. {, q6 u0 G8 x7 ^0 P- D" n* Z
   
2.   "coinbase"   : "0x0000000000000000000000000000000000000000",
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3.   "difficulty" : "0x400",- f/ ]8 @1 d: m" D# S( g
   
4.   "extraData"  : "0x0",- m+ }; r( \9 Z/ V2 Q+ O
   
5.   "gasLimit"   : "0x2fefd8",
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6.   "nonce"      : "0xdeadbeefdeadbeef",2 S- g) Q. l0 b' y
   
7.   "mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
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8.   "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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9.   "timestamp"  : "0x00",, z' Y8 u( L, c" q' S2 r5 ^9 o
   
10.   "alloc"      : {}: \" _$ |6 d. q2 i# s
    
11. }

复制代码

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然而启动的时候：* C; N- i; l9 J2 {- O  n, ^
wangyideMacBook-Pro:eth vincent$  geth --datadir data0 init genesis.json
  x& p9 m0 v6 Q' W0 EFatal: invalid genesis file: json: cannot unmarshal hex string of odd length into Go struct field Genesis.extraData of type hexutil.Bytes
# O! v0 x! b0 v$ ^9 z) SwangyideMacBook-Pro:eth vincent$ & m- n, l0 Y& K6 ^
哪位大神能帮帮我？