不知道某次更新后，运行真机后nvue的App页面就报错了。但是以前是好好的，可能是我们代码的问题，因为以前是主要适配小程序，App都是附带的。报错附件1。
eportJSException >>>> exception function:createInstanceContext, exception:white screen cause create instanceContext failed,check js stack ->Uncaught Error: Module build failed (from ./node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/webpack-uni-nvue-loader/lib/style.js):
21:32:33.310 TypeError: Cannot read property '1' of null
21:32:33.327 at transition (/Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/weex-styler/lib/shorthand-parser.js:15:8)
21:32:33.352 at declarations.reduce (/Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/weex-styler/lib/shorthand-parser.js:55:28)
21:32:33.401 at module.exports (/Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/weex-styler/lib/shorthand-parser.js:52:23)
21:32:33.433 at /Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/weex-styler/index.js:62:31
21:32:33.474 at Object.parse (/Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/weex-styler/index.js:55:26)
21:32:33.497 at genStyleString (/Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/webpack-uni-nvue-loader/lib/style.js:36:10)
21:32:33.531 at Object.module.exports (/Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/webpack-uni-nvue-loader/lib/style.js:8:45)
然后按照报错，我在本地/Applications/HBuilderX-Alpha.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/weex-styler/lib/shorthand-parser，如附件2
代码内多加了个判断，nvue白屏就好了，应该是某个样式导致的，但是我把样式来回删了几遍始终找不到是哪个样式的问题。
不知道这个能不能报bug.
