geth初始化为什么失败？

Question

Windows系统，安装了geth客户端，创建数据存放地址并初始化创世块为什么会报错？

genesis.json文件内容：

{ 

"nonce":"0x0000000000000042", 

"mixhash":"0x0000000000000000000000000000000000000000000000000000000000000000", 

"difficulty": "0x4000", 

"alloc": {}, 

"coinbase":"0x0000000000000000000000000000000000000000", 

"timestamp": "0x00", 

"parentHash":"0x0000000000000000000000000000000000000000000000000000000000000000", 

"extraData": "0x", 

"gasLimit":"0xffffffff", 

"config": {} 

}