vega - “未找到模块：错误：无法解析 './iterator.js'

Question

我突然收到以下错误，我不知道如何解决它们：

Object
loc: "1224:2-26"
message: "Module not found: Error: Can't resolve './iterator.js' in 'C:\\Users\\MyApp\\node_modules\\vega-embed\\build'"
moduleIdentifier: "C:\\Users\\MyApp\\node_modules\\@angular-devkit\\build-angular\\src\\babel\\webpack-loader.js??ruleSet[1].rules[2].use[0]!C:\\Users\\my-project\\node_modules\\@ngtools\\webpack\\src\\ivy\\index.js!C:\\Users\\MyApp\\node_modules\\source-map-loader\\dist\\cjs.js??ruleSet[1].rules[3]!C:\\Users\\MyApp\\node_modules\\vega-embed\\build\\vega-embed.module.js"
moduleName: "./node_modules/vega-embed/build/vega-embed.module.js"
[[Prototype]]: Object

./node_modules/vega-embed/build/vega-embed.module.js:1224:2-26 - Warning: Module not found: Error: Can't resolve './iterator.js' in 'C:\Users\MyApp\node_modules\vega-embed\build'

构建应用程序时，我还会收到以下警告：

Warning: C:\Users\MyApp\src\app\components\vega\vega.component.ts depends on 'vega-embed'. CommonJS or AMD dependencies can cause optimization bailouts.

有人可以帮助我了解问题所在以及如何解决这些问题吗？