uni-app导入mpvue-picker后编译成微信小程序时出现问题了，重装也没有解决app和h5都正常，报Cannot read property 'charAt' of undefined，在线等。
Module build failed (from ./node_modules/vue-loader/lib/loaders/templateLoader.js):
07:42:01.585 TypeError: Cannot read property 'charAt' of undefined
07:42:01.594 at parseEvent (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\lib\script\traverse\data\event.js:181:20)
07:42:01.596 at _processEvent (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\lib\script\traverse\data\event.js:328:9)
07:42:01.606 at processEvent (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\lib\script\traverse\data\event.js:387:5)
07:42:01.608 at processes.forEach.process (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\lib\script\traverse\data\index.js:34:5)
07:42:01.616 at Array.forEach (<anonymous>)
07:42:01.617 at traverseData (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\lib\script\traverse\data\index.js:33:13)
07:42:01.627 at Object.CallExpression (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\lib\script\traverse\visitor.js:165:56)
07:42:01.631 at NodePath._call (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\path\context.js:53:20)
07:42:01.642 at NodePath.call (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\path\context.js:40:17)
07:42:01.652 at NodePath.visit (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\path\context.js:88:12)
07:42:01.661 at TraversalContext.visitQueue (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\context.js:118:16)
07:42:01.670 at TraversalContext.visitMultiple (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\context.js:85:17)
07:42:01.679 at TraversalContext.visit (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\context.js:144:19)
07:42:01.688 at Function.traverse.node (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\index.js:94:17)
07:42:01.698 at NodePath.visit (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\path\context.js:95:18)
07:42:01.707 at TraversalContext.visitQueue (C:\Users\001\Desktop\HBuilderX.2.1.1.20190716.full\HBuilderX\plugins\uniapp-cli\node_modules\@dcloudio\uni-template-compiler\node_modules\@babel\traverse\lib\context.js:118:16)
07:42:01.716 ERROR Build failed with errors.
