Angular cli升级报错解决方案

报错

Local workspace file ('angular.json') could not be found.
Error: Local workspace file ('angular.json') could not be found.
    at WorkspaceLoader._getProjectWorkspaceFilePath (/Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/workspace-loader.js:37:19)
    at WorkspaceLoader.loadWorkspace (/Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/workspace-loader.js:24:21)
    at ServeCommand._loadWorkspaceAndArchitect (/Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/architect-command.js:180:32)
    at ServeCommand.<anonymous> (/Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/architect-command.js:47:25)
    at Generator.next (<anonymous>)
    at /Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/architect-command.js:7:71
    at new Promise (<anonymous>)
    at __awaiter (/Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/architect-command.js:3:12)
    at ServeCommand.initialize (/Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/architect-command.js:46:16)
    at Object.<anonymous> (/Users/next/projects/ng-projects/nhwc-admin/node_modules/@angular/cli/models/command-runner.js:87:23)

解决方案

工程目录执行

ng update @angular/cli