Error: schema validation failed with the following error: the data path '' should not have other properties (projects)

problem ：

After migrating application from angular 5 to 6, on running ng serve the following errors pop up. Take the application from angular 5 Migrate to 6 after , Running ng serve The following error will pop up .

Schema validation failed with the following errors: Data path "" should NOT have additional properties(project). Schema validation failed with the following error ： Data path “” No other attributes expected （ project ）.Error: Schema validation failed with the following errors: Data path "" should NOT have additional properties(project). error ： Schema validation failed with the following error ： Data path “” Should not have other attributes （ project ）.at MergeMapSubscriber._registry.compile.pipe.operators_1.concatMap.validatorResult [as project] (.../TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/src/workspace/workspace.js:210:42) at MergeMapSubscriber._tryNext (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:65:27) at MergeMapSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:55:18) at MergeMapSubscriber.Subscriber.next (/home/training/Attinad_Projects/TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:64:18) at MergeMapSubscriber.notifyNext (.../TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:84:26) at InnerSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Inne stay MergeMapSubscriber._registry.compile.pipe.operators_1.concatMap.validatorResult [ As a project ] (.../TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/src/workspace/workspace. js:210:42) stay MergeMapSubscriber._tryNext (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:65:27 ) stay MergeMapSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:55:18) stay MergeMapSubscriber.Subscriber. stay MergeMapSubscriber.notifyNext (. ../TemplateApp/me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/mergeMap.js:84:26) stay InnerSubscriber._next (.../me -cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/InnerSubscriber.js:25:21) at InnerSubscriber.Subscriber.next (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:64:18) at MapSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/map.js:52:26) at MapSubscriber.Subscriber.next (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:64:18) at SwitchMapSubscriber.notifyNext (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:77:26)rSubscriber.js:25:21) stay InnerSubscriber.Subscriber.next (/.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/Subscriber.js:64 :18) stay MapSubscriber._next (.../me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/map.js:52:26) stay MapSubscriber. SwitchMapSubscriber.notifyNext (... /me-cmf-web-template-angular/node_modules/@angular-devkit/core/node_modules/rxjs/internal/operators/switchMap.js:77:26)

I assume that the error is with .angular.json file which I re-named from .angular-cli.json . I assume that the mistake is related to me .angular-cli.json Renamed .angular.json Related documents .

My .angular.json file is as follows : my .angular.json The documents are as follows ：

{    "$schema": "./node_modules/@angular/cli/lib/config/schema.json",    "project": {        "name": "mediaweb"    },    "apps": [{            "root": "src",            "outDir": "dist/browser",            "assets": [                "assets",                "favicon.ico"            ],            "index": "index.html",            "main": "main.ts",            "polyfills": "polyfills.ts",            "test": "test.ts",            "tsconfig": "tsconfig.app.json",            "testTsconfig": "tsconfig.spec.json",            "prefix": "app",            "styles": [                "styles.scss",                "../node_modules/owl.carousel/dist/assets/owl.carousel.css",                "../node_modules/owl.carousel/dist/assets/owl.theme.default.css",                "../node_modules/video.js/dist/video-js.css"            ],            "scripts": [                "../node_modules/jquery/dist/jquery.js",                "../node_modules/owl.carousel/dist/owl.carousel.js",                "../node_modules/video.js/dist/ie8/videojs-ie8.js",                "../node_modules/video.js/dist/video.js"            ],            "environmentSource": "environments/environment.ts",            "environments": {                "dev": "environments/environment.dev.ts",                "prod": "environments/environment.prod.ts"            }        },        {            "platform": "server",            "root": "src",            "outDir": "dist/server",            "assets": [                "assets",                "favicon.ico"            ],            "index": "index.html",            "main": "main.server.ts",            "test": "test.ts",            "tsconfig": "tsconfig.server.json",            "testTsconfig": "tsconfig.spec.json",            "prefix": "app",            "styles": [                "styles.scss"            ],            "scripts": [],            "environmentSource": "environments/environment.ts",            "environments": {                "dev": "environments/environment.dev.ts",                "prod": "environments/environment.prod.ts"            }        }    ],    "e2e": {        "protractor": {            "config": "./protractor.conf.js"        }    },    "lint": [{            "project": "src/tsconfig.app.json",            "exclude": ["**/node_modules/**", "**/UI/**"]        },        {            "project": "src/tsconfig.spec.json",            "exclude": "**/node_modules/**"        },        {            "project": "e2e/tsconfig.e2e.json",            "exclude": "**/node_modules/**"        }    ],    "test": {        "karma": {            "config": "./karma.conf.js"        }    },    "defaults": {        "styleExt": "scss",        "component": {}    }}

Should I re-structure the json file, if so how?. I should restructure json Documents , If so ？

Any help would be great. Any help would be great .

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Solution ：

Reference resources ： https://stackoom.com/en/question/3XrEH