打包小程序时编译到小程序报错，错误内容看下面代码。麻烦帮忙看看，是什么原因？该怎么解决？

TypeError: Property value expected type of string but got undefined
[HBuilder] 11:36:59.387 at Object.validate (D:HBuilderXpluginsuniapp-clinode_modules@babeltypeslibdefinitionsutils.js:134:13)
[HBuilder] 11:36:59.393 at validateField (D:HBuilderXpluginsuniapp-clinode_modules@babeltypeslibvalidatorsvalidate.js:21:9)
[HBuilder] 11:36:59.394 at validate (D:HBuilderXpluginsuniapp-clinode_modules@babeltypeslibvalidatorsvalidate.js:15:3)
[HBuilder] 11:36:59.399 at validateNode (D:HBuilderXpluginsuniapp-clinode_modules@babeltypeslibbuildersvalidateNode.js:12:27)
[HBuilder] 11:36:59.399 at Object.stringLiteral (D:HBuilderXpluginsuniapp-clinode_modules@babeltypeslibbuildersgeneratedindex.js:432:36)
[HBuilder] 11:36:59.404 at parseEventByCallExpression (D:HBuilderXpluginsuniapp-clinode_modules@dcloudiouni-template-compilerlibscripttraversedataevent.js:179:30)
[HBuilder] 11:36:59.405 at D:HBuilderXpluginsuniapp-clinode_modules@dcloudiouni-template-compilerlibscripttraversedataevent.js:320:15
[HBuilder] 11:36:59.411 at Array.forEach (<anonymous>)
[HBuilder] 11:36:59.418 at D:HBuilderXpluginsuniapp-clinode_modules@dcloudiouni-template-compilerlibscripttraversedataevent.js:319:28
[HBuilder] 11:36:59.419 at Array.forEach (<anonymous>)
[HBuilder] 11:36:59.425 at parseEvent (D:HBuilderXpluginsuniapp-clinode_modules@dcloudiouni-template-compilerlibscripttraversedataevent.js:260:15)
[HBuilder] 11:36:59.433 at _processEvent (D:HBuilderXpluginsuniapp-clinode_modules@dcloudiouni-template-compilerlibscripttraversedataevent.js:450:9)
[HBuilder] 11:36:59.434 at processEvent (D:HBuilderXpluginsuniapp-clinode_modules@dcloudiouni-template-compilerlibscripttraversedataevent.js:511:5)
[HBuilder] 11:36:59.442 at D:HBuilderXpluginsuniapp-clinode_modules@dcloudiouni-template-compilerlibscripttraversedataindex.js:40:5
[HBuilder] 11:36:59.444 at Array.

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