Parallelshell存在问题，必须手动修复；

There is a problem with Parallelshell that has to be fixed manually;

转到文件:

node_modules/parallelshell/index.js:105

然后更改此行:

cwd: process.versions.node < '8.0.0' ? process.cwd : process.cwd(),

对此:

cwd: parseInt(process.versions.node) < 8 ? process.cwd : process.cwd(),

完成了！