The 'buildOptimizer' option cannot be used without 'aot'

when I try to run the "ng serve" command I get the follow error:

[error] Error: The 'buildOptimizer' option cannot be used without 'aot'.

at generateWebpackConfig (C:\Users\Acasa\0 SDA\0 Proiecte practice\0 onlineMall\onlineMallApp\node_modules\@angular-devkit\build-angular\src\utils\webpack-browser-config.js:45:15)
at generateBrowserWebpackConfigFromContext (C:\Users\Acasa\0 SDA\0 Proiecte practice\0 onlineMall\onlineMallApp\node_modules\@angular-devkit\build-angular\src\utils\webpack-browser-config.js:125:26)
at async generateI18nBrowserWebpackConfigFromContext (C:\Users\Acasa\0 SDA\0 Proiecte practice\0 onlineMall\onlineMallApp\node_modules\@angular-devkit\build-angular\src\utils\webpack-browser-config.js:73:20)
at async setup (C:\Users\Acasa\0 SDA\0 Proiecte practice\0 onlineMall\onlineMallApp\node_modules\@angular-devkit\build-angular\src\builders\dev-server\index.js:134:47)

I've been trying all solutions found on internet but no one worked for me. Many people suggested to make some changes into the angular.json file, but nothing worked for me.

This is my angular.json file content.

{ "$schema": "./node_modules/@angular/cli/lib/config/schema.json", "version": 1, "newProjectRoot": "projects", "projects": { "angular-ecommerce": { "projectType": "application", "schematics": {}, "root": "", "sourceRoot": "src", "prefix": "app", "architect": { "build": { "builder": "@angular-devkit/build-angular:browser", "options": { "outputPath": "dist/angular-ecommerce", "index": "src/index.html", "main": "src/main.ts", "polyfills": "src/polyfills.ts", "tsConfig": "tsconfig.app.json", "aot": false, "assets": [ "src/favicon.ico", "src/assets" ], "styles": [ "src/styles.css", "node_modules/bootstrap/dist/css/bootstrap.min.css", "node_modules/@fortawesome/fontawesome-free/css/all.min.css" ], "scripts": [] }, "configurations": { "production": { "fileReplacements": [ { "replace": "src/environments/environment.ts", "with": "src/environments/environment.prod.ts" } ], "optimization": true, "outputHashing": "all", "sourceMap": false,

          "namedChunks": false,
          "aot":true,
          "extractLicenses": true,
          "vendorChunk": false,
          "buildOptimizer": true,
          "budgets": [
            {
              "type": "initial",
              "maximumWarning": "2mb",
              "maximumError": "5mb"
            },
            {
              "type": "anyComponentStyle",
              "maximumWarning": "6kb",
              "maximumError": "10kb"
            }
          ]
        }
      }
    },
    "serve": {
      "builder": "@angular-devkit/build-angular:dev-server",
      "options": {
        "browserTarget": "angular-ecommerce:build"
      },
      "configurations": {
        "production": {
          "browserTarget": "angular-ecommerce:build:production"
        }
      }
    },
    "extract-i18n": {
      "builder": "@angular-devkit/build-angular:extract-i18n",
      "options": {
        "browserTarget": "angular-ecommerce:build"
      }
    },
    "test": {
      "builder": "@angular-devkit/build-angular:karma",
      "options": {
        "main": "src/test.ts",
        "polyfills": "src/polyfills.ts",
        "tsConfig": "tsconfig.spec.json",
        "karmaConfig": "karma.conf.js",
        "assets": [
          "src/favicon.ico",
          "src/assets"
        ],
        "styles": [
          "src/styles.css"
        ],
        "scripts": []
      }
    },
    "lint": {
      "builder": "@angular-devkit/build-angular:tslint",
      "options": {
        "tsConfig": [
          "tsconfig.app.json",
          "tsconfig.spec.json",
          "e2e/tsconfig.json"
        ],
        "exclude": [
          "**/node_modules/**"
        ]
      }
    },
    "e2e": {
      "builder": "@angular-devkit/build-angular:protractor",
      "options": {
        "protractorConfig": "e2e/protractor.conf.js",
        "devServerTarget": "angular-ecommerce:serve"
      },
      "configurations": {
        "production": {
          "devServerTarget": "angular-ecommerce:serve:production"
        }
      }
    }
  }
}},

"defaultProject": "angular-ecommerce", "cli": { "analytics": false } }