作为初学者，我无法从产品数据文件中获取数据，我按照在线教程进行操作，但遇到了这个问题：
react-dom.development.js:20135 Uncaught TypeError: _productsData__WEBPACK_IMPORTED_MODULE_2___default.a.map is not a function
at Products (Products.js:9)
at mountIndeterminateComponent (react-dom.development.js:15425)
at beginWork (react-dom.development.js:15956)
at performUnitOfWork (react-dom.development.js:19102)
at workLoop (react-dom.development.js:19143)
at renderRoot (react-dom.development.js:19228)
at performWorkOnRoot (react-dom.development.js:20165)
at performWork (react-dom.development.js:20075)
at performSyncWork (react-dom.development.js:20049)
at requestWork (react-dom.development.js:19904)
at scheduleWork (react-dom.development.js:19711)
at scheduleRootUpdate (react-dom.development.js:20415)
at updateContainerAtExpirationTime (react-dom.development.js:20441)
at updateContainer (react-dom.development.js:20509)
at ReactRoot.push../node_modules/react-dom/cjs/react-dom.development.js.ReactRoot.render (react-dom.development.js:20820)
at react-dom.development.js:20974
at unbatchedUpdates (react-dom.development.js:20292)
at legacyRenderSubtreeIntoContainer (react-dom.development.js:20970)
at Object.render (react-dom.development.js:21037)
at Module../src/index.js (index.js:11)
at __webpack_require__ (bootstrap:782)
at fn (bootstrap:150)
at Object.0 (serviceWorker.js:135)
at __webpack_require__ (bootstrap:782) …