npm run serve报错

异常信息如下：
TypeError: Cannot convert undefined or null to object
TypeError: Cannot convert undefined or null to object
at Function.assign (<anonymous>)
at D:\work\code\fedx-zhihan\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:53:34
at Object.tap (D:\work\code\fedx-zhihan\node_modules\webpack-chain\src\Use.js:14:20)
at D:\work\code\fedx-zhihan\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:53:12
at Array.forEach (<anonymous>)
at D:\work\code\fedx-zhihan\node_modules\@dcloudio\vue-cli-plugin-uni\lib\chain-webpack.js:22:17
at D:\work\code\fedx-zhihan\node_modules\@vue\cli-service\lib\Service.js:268:40
at Array.forEach (<anonymous>)
at Service.resolveChainableWebpackConfig (D:\work\code\fedx-zhihan\node_modules\@vue\cli-service\lib\Service.js:268:
26)
at Service.resolveWebpackConfig (D:\work\code\fedx-zhihan\node_modules\@vue\cli-service\lib\Service.js:272:48)
at PluginAPI.resolveWebpackConfig (D:\work\code\fedx-zhihan\node_modules\@vue\cli-service\lib\PluginAPI.js:132:25)
at serve (D:\work\code\fedx-zhihan\node_modules\@dcloudio\vue-cli-plugin-uni\commands\serve.js:51:31)
at Service.run (D:\work\code\fedx-zhihan\node_modules\@vue\cli-service\lib\Service.js:262:12)
at processTicksAndRejections (internal/process/task_queues.js:95:5)
package.json如下：
{
"name": "fedx-zhihan",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "npm run dev:h5",
"build": "npm run build:h5",
"build:app-plus": "cross-env NODE_ENV=production UNI_PLATFORM=app-plus vue-cli-service uni-build",
"build:custom": "cross-env NODE_ENV=production uniapp-cli custom",
"build:h5": "cross-env NODE_ENV=production UNI_PLATFORM=h5 vue-cli-service uni-build",
"build:mp-360": "cross-env NODE_ENV=production UNI_PLATFORM=mp-360 vue-cli-service uni-build",
"build:mp-alipay": "cross-env NODE_ENV=production UNI_PLATFORM=mp-alipay vue-cli-service uni-build",
"build:mp-baidu": "cross-env NODE_ENV=production UNI_PLATFORM=mp-baidu vue-cli-service uni-build",
"build:mp-jd": "cross-env NODE_ENV=production UNI_PLATFORM=mp-jd vue-cli-service uni-build",
"build:mp-kuaishou": "cross-env NODE_ENV=production UNI_PLATFORM=mp-kuaishou vue-cli-service uni-build",
"build:mp-lark": "cross-env NODE_ENV=production UNI_PLATFORM=mp-lark vue-cli-service uni-build",
"build:mp-qq": "cross-env NODE_ENV=production UNI_PLATFORM=mp-qq vue-cli-service uni-build",
"build:mp-toutiao": "cross-env NODE_ENV=production UNI_PLATFORM=mp-toutiao vue-cli-service uni-build",
"build:mp-weixin": "cross-env NODE_ENV=production UNI_PLATFORM=mp-weixin vue-cli-service uni-build",
"build:mp-xhs": "cross-env NODE_ENV=production UNI_PLATFORM=mp-xhs vue-cli-service uni-build",
"build:quickapp-native": "cross-env NODE_ENV=production UNI_PLATFORM=quickapp-native vue-cli-service uni-build",
"build:quickapp-webview": "cross-env NODE_ENV=production UNI_PLATFORM=quickapp-webview vue-cli-service uni-build",
"build:quickapp-webview-huawei": "cross-env NODE_ENV=production UNI_PLATFORM=quickapp-webview-huawei vue-cli-service uni-build",
"build:quickapp-webview-union": "cross-env NODE_ENV=production UNI_PLATFORM=quickapp-webview-union vue-cli-service uni-build",
"dev:app-plus": "cross-env NODE_ENV=development UNI_PLATFORM=app-plus vue-cli-service uni-build --watch",
"dev:custom": "cross-env NODE_ENV=development uniapp-cli custom",
"dev:h5": "cross-env NODE_ENV=development UNI_PLATFORM=h5 vue-cli-service uni-serve",
"dev:mp-360": "cross-env NODE_ENV=development UNI_PLATFORM=mp-360 vue-cli-service uni-build --watch",
"dev:mp-alipay": "cross-env NODE_ENV=development UNI_PLATFORM=mp-alipay vue-cli-service uni-build --watch",
"dev:mp-baidu": "cross-env NODE_ENV=development UNI_PLATFORM=mp-baidu vue-cli-service uni-build --watch",
"dev:mp-jd": "cross-env NODE_ENV=development UNI_PLATFORM=mp-jd vue-cli-service uni-build --watch",
"dev:mp-kuaishou": "cross-env NODE_ENV=development UNI_PLATFORM=mp-kuaishou vue-cli-service uni-build --watch",
"dev:mp-lark": "cross-env NODE_ENV=development UNI_PLATFORM=mp-lark vue-cli-service uni-build --watch",
"dev:mp-qq": "cross-env NODE_ENV=development UNI_PLATFORM=mp-qq vue-cli-service uni-build --watch",
"dev:mp-toutiao": "cross-env NODE_ENV=development UNI_PLATFORM=mp-toutiao vue-cli-service uni-build --watch",
"dev:mp-weixin": "cross-env NODE_ENV=development UNI_PLATFORM=mp-weixin vue-cli-service uni-build --watch",
"dev:mp-xhs": "cross-env NODE_ENV=development UNI_PLATFORM=mp-xhs vue-cli-service uni-build --watch",
"dev:quickapp-native": "cross-env NODE_ENV=development UNI_PLATFORM=quickapp-native vue-cli-service uni-build --watch",
"dev:quickapp-webview": "cross-env NODE_ENV=development UNI_PLATFORM=quickapp-webview vue-cli-service uni-build --watch",
"dev:quickapp-webview-huawei": "cross-env NODE_ENV=development UNI_PLATFORM=quickapp-webview-huawei vue-cli-service uni-build --watch",
"dev:quickapp-webview-union": "cross-env NODE_ENV=development UNI_PLATFORM=quickapp-webview-union vue-cli-service uni-build --watch",
"info": "node node_modules/@dcloudio/vue-cli-plugin-uni/commands/info.js",
"serve:quickapp-native": "node node_modules/@dcloudio/uni-quickapp-native/bin/serve.js",
"test:android": "cross-env UNI_PLATFORM=app-plus UNI_OS_NAME=android jest -i",
"test:h5": "cross-env UNI_PLATFORM=h5 jest -i",
"test:ios": "cross-env UNI_PLATFORM=app-plus UNI_OS_NAME=ios jest -i",
"test:mp-baidu": "cross-env UNI_PLATFORM=mp-baidu jest -i",
"test:mp-weixin": "cross-env UNI_PLATFORM=mp-weixin jest -i"
},
"dependencies": {
"@dcloudio/uni-app": "^2.0.2-4020320240708001",
"@dcloudio/uni-app-plus": "^2.0.2-4020320240708001",
"@dcloudio/uni-h5": "^2.0.2-4020320240708001",
"@dcloudio/uni-i18n": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-360": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-alipay": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-baidu": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-jd": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-kuaishou": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-lark": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-qq": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-toutiao": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-vue": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-weixin": "^2.0.2-4020320240708001",
"@dcloudio/uni-mp-xhs": "^2.0.2-4020320240708001",
"@dcloudio/uni-quickapp-native": "^2.0.2-4020320240708001",
"@dcloudio/uni-quickapp-webview": "^2.0.2-4020320240708001",
"@dcloudio/uni-stacktracey": "^2.0.2-4020320240708001",
"@dcloudio/uni-stat": "^2.0.2-4020320240708001",
"@vue/shared": "^3.0.0",
"autoprefixer": "^8.0.0",
"core-js": "^3.8.3",
"crypto-js": "^4.2.0",
"flyio": "^0.6.2",
"js-base64": "^3.7.7",
"postcss": "^8.4.39",
"postcss-loader": "^4.0.3",
"sass": "^1.77.8",
"tki-qrcode": "^0.1.6",
"uni-ajax": "^2.5.1",
"uuid": "^10.0.0",
"uview-ui": "^2.0.35",
"vue": ">= 2.6.14 < 2.7",
"vuex": "^3.2.0"
},
"devDependencies": {
"@dcloudio/types": "^3.3.2",
"@dcloudio/uni-automator": "^2.0.2-4020320240708001",
"@dcloudio/uni-cli-i18n": "^2.0.2-4020320240708001",
"@dcloudio/uni-cli-shared": "^2.0.2-4020320240708001",
"@dcloudio/uni-helper-json": "*",
"@dcloudio/uni-migration": "^2.0.2-4020320240708001",
"@dcloudio/uni-template-compiler": "^2.0.2-4020320240708001",
"@dcloudio/vue-cli-plugin-hbuilderx": "^2.0.2-4020320240708001",
"@dcloudio/vue-cli-plugin-uni": "^2.0.2-4020320240708001",
"@dcloudio/vue-cli-plugin-uni-optimize": "^2.0.2-4020320240708001",
"@dcloudio/webpack-uni-mp-loader": "^2.0.2-4020320240708001",
"@dcloudio/webpack-uni-pages-loader": "^2.0.2-4020320240708001",
"@vue/cli-plugin-babel": "~5.0.0",
"@vue/cli-service": "~5.0.0",
"babel-plugin-import": "^1.11.0",
"cross-env": "^7.0.2",
"jest": "^25.4.0",
"postcss-comment": "^2.0.0",
"vue-template-compiler": ">= 2.6.14 < 2.7"
},
"browserslist": [
"Android >= 4.4",
"ios >= 9"
],
"uni-app": {
"scripts": {}
}
}