今天，sudeenly我开始得到这个错误 ＆＃34;无法读取属性＆＃39; NullLogger＆＃39;在我的angular 4应用程序中尝试添加组件（ng g c abc）时未定义＆＃34; 。当我在谷歌搜索它时，人们建议我们需要将我们的cli版本更新到1.4.10。但问题是为什么我们现在为1.4.10以下的所有angular / cli版本得到此错误？。我现在不想更新我的CLI版本。有谁知道它为什么会发生？
以下是我的package.json文件，
"dependencies": {
"@angular/animations": "^4.4.6",
"@angular/common": "^4.4.6",
"@angular/compiler": "^4.4.6",
"@angular/core": "^4.4.6",
"@angular/forms": "^4.4.6",
"@angular/http": "^4.4.6",
"@angular/platform-browser": "^4.4.6",
"@angular/platform-browser-dynamic": "^4.4.6",
"@angular/router": "^4.4.6",
"angular2-csv": "^0.2.5",
"bootstrap": "^3.3.7",
"classlist.js": "^1.1.20150312",
"core-js": "^2.4.1",
"font-awesome": "^4.7.0",
"jquery": "^3.2.1",
"lodash": "^4.17.4",
"ng-select": "^1.0.0-rc.3",
"ng2-dragula": "^1.5.0",
"reflect-metadata": "^0.1.10",
"rxjs": "^5.4.2",
"toastr": "^2.1.2",
"underscore": "^1.8.3",
"web-animations-js": "^2.3.1",
"zone.js": "^0.8.14"
},
"devDependencies": {
"@angular/cli": "1.4.7",
"@angular/compiler-cli": "^4.4.6",
"@angular/language-service": "^4.4.6",
"@types/jasmine": "~2.5.53",
"@types/jasminewd2": "~2.0.2",
"@types/node": "~6.0.60",
"@types/toastr": "^2.1.35",
"codelyzer": "~3.2.0",
"jasmine-core": "~2.6.2",
"jasmine-spec-reporter": "~4.1.0",
"karma": "~1.7.0",
"karma-chrome-launcher": "~2.1.1",
"karma-cli": "~1.0.1",
"karma-coverage-istanbul-reporter": "^1.2.1",
"karma-jasmine": "~1.1.0",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.1.2",
"ts-node": "~3.2.0",
"tslint": "~5.7.0",
"typescript": "^2.3.4"
}
答案 0 :(得分：19)
我确实关注了这个问题，
全局卸载@ angular / cli
npm uninstall -g @angular/cli
在本地卸载@ angular / cli
npm uninstall --save-dev @angular/cli
清除缓存，
npm cache clean
全局和本地安装@ angular / cli
npm install -g @angular/cli@latest
npm install --save-dev @angular/cli@latest
之后全部工作。
答案 1 :(得分：1)
我也收到了这个错误。 不幸的是，接受的答案对我没有帮助。
所以我需要安装最新版本的Node.js.然后再次安装CLI：
npm install -g @ angular / cli @ latest
之后问题得到解决。