想用原生子窗体做侧边抽屉效果，但是配置subNvues后，项目运行就报错。
这是我的目录结构和配置：
下面信息是，错误信息：
083 编译器版本：2.7.9（v3）详见：https://ask.dcloud.net.cn/article/36599。
17:26:11.085 请注意运行模式下，因日志输出、sourcemap以及未压缩源码等原因，性能和包体积，均不及发行模式。
17:26:11.090 正在编译中...
17:26:18.867 Module build failed (from ./node_modules/@dcloudio/vue-cli-plugin-hbuilderx/packages/webpack-uni-nvue-loader/lib/style.js):
17:26:18.870 TypeError: Cannot read property '1' of null
17:26:18.883 at transition (D:\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\vue-cli-plugin-hbuilderx\packages\weex-styler\lib\shorthand-parser.js:14:8)
17:26:18.896 at declarations.reduce (D:\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\vue-cli-plugin-hbuilderx\packages\weex-styler\lib\shorthand-parser.js:54:28)
17:26:18.905 at Array.reduce (<anonymous>)
17:26:18.923 at module.exports (D:\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\vue-cli-plugin-hbuilderx\packages\weex-styler\lib\shorthand-parser.js:51:23)
17:26:18.953 at D:\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\vue-cli-plugin-hbuilderx\packages\weex-styler\index.js:62:31
17:26:18.967 at Array.forEach (<anonymous>)
17:26:18.968 at Object.parse (D:\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\vue-cli-plugin-hbuilderx\packages\weex-styler\index.js:55:26)
17:26:18.996 at genStyleString (D:\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\vue-cli-plugin-hbuilderx\packages\webpack-uni-nvue-loader\lib\style.js:36:10)
17:26:18.997 at Object.module.exports (D:\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\vue-cli-plugin-hbuilderx\packages\webpack-uni-nvue-loader\lib\style.js:8:45)
17:26:24.118 DONE Build complete. Watching for changes...
