weex编译文件时提示
new version [1.3.5] of weex-previewer is detected.
然后选择升级出现错误
Error: fatal error!
at installer.(anonymous function).then (/usr/local/lib/node_modules/weex-toolkit/node_modules/.0.2.5@xtoolkit/src/Command.js:49:31)
又遇到过相同问题的朋友么，请问该报错如何解决？
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