I downgraded my project angular version 14.0.0 to 13.0.0 for fixing this error Mat Dialog boxes close button is not working on IOS devices by following the answer from How to downgrade angular version? But after downgrading when I am trying to run by ng serve iam getting this error I checked the specified folder there the file asyncToGenerator.js is exists ./node_modules/idb/build/index.js:1:0-211 - Error: Module not found: Error: Can't resolve '/Volumes/Macintosh HD/Users/ravi/Public/new_mob/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js' in '/Volumes/Macintosh HD/Users/ravi/Public/new_mob/node_modules/idb/build' i tried npm install --save-dev @angular-devkit/build-angular still getting same error my package.json file is { "name": "new-design", "version": "0.0.1", "author": "Ionic Framework", "homepage": "https://ionicframework.com/", "scripts": { "ng": "ng", "start": "ng serve --poll=2000", "build": "ng build", "test": "ng test", "lint": "ng lint", "e2e": "ng e2e" }, "private": true, "dependencies": { "@angular-slider/ngx-slider": "^2.0.4", "@angular/animations": "^13.0.0", "@angular/cdk": "^13.0.0", "@angular/common": "^13.0.0", "@angular/core": "^13.0.0", "@angular/forms": "^13.0.0", "@angular/material": "^13.0.0", "@angular/platform-browser": "^13.0.0", "@angular/platform-browser-dynamic": "^13.0.0", "@angular/router": "^13.0.0", "@capacitor/app": "1.1.1", "@capacitor/browser": "^4.0.1", "@capacitor/camera": "^4.0.1", "@capacitor/core": "3.6.0", "@capacitor/filesystem": "^4.0.1", "@capacitor/geolocation": "^4.0.1", "@capacitor/haptics": "1.1.4", "@capacitor/status-bar": "1.0.8", "@ionic/angular": "^6.1.9", "@ionic/pwa-elements": "^3.1.1", "@teamhive/lottie-player": "^1.0.0", "add": "^2.0.6", "angularx-social-login": "^4.1.0", "card-validator": "^8.1.1", "compressorjs": "^1.1.1", "crypto-js": "^4.1.1", "firebase": "^9.15.0", "html-entities": "^2.3.3", "libphonenumber-js": "^1.10.12", "ng": "^0.0.0", "ngx-cookie-service": "^14.0.1", "ngx-device-detector": "^4.0.1", "ngx-infinite-scroll": "^10.0.1", "ngx-webcam": "^0.4.1", "rxjs": "~6.6.0", "socket.io-client": "^2.5.0", "swiper": "^8.4.2", "tslib": "^2.2.0", "zone.js": "~0.11.4" }, "devDependencies": { "@angular-devkit/build-angular": "^13.3.10", "@angular-eslint/builder": "~13.0.1", "@angular-eslint/eslint-plugin": "~13.0.1", "@angular-eslint/eslint-plugin-template": "~13.0.1", "@angular-eslint/template-parser": "~13.0.1", "@angular/cli": "13.0", "@angular/compiler": "^13.0.0", "@angular/compiler-cli": "^13.0.0", "@angular/language-service": "^13.0.0", "@capacitor/cli": "3.6.0", "@ionic/angular-toolkit": "^6.0.0", "@types/jasmine": "~3.6.0", "@types/jasminewd2": "~2.0.3", "@types/node": "^12.11.1", "@types/socket.io-client": "^3.0.0", "@typescript-eslint/eslint-plugin": "5.3.0", "@typescript-eslint/parser": "5.3.0", "eslint": "^7.6.0", "eslint-plugin-import": "2.22.1", "eslint-plugin-jsdoc": "30.7.6", "eslint-plugin-prefer-arrow": "1.2.2", "jasmine-core": "~3.8.0", "jasmine-spec-reporter": "~5.0.0", "karma": "~6.3.2", "karma-chrome-launcher": "~3.1.0", "karma-coverage": "~2.0.3", "karma-coverage-istanbul-reporter": "~3.0.2", "karma-jasmine": "~4.0.0", "karma-jasmine-html-reporter": "^1.5.0", "protractor": "~7.0.0", "ts-node": "~8.3.0", "typescript": "~4.6.4" }, "description": "An Ionic project" } my package.json file before downgrading is "name": "new-design", "version": "0.0.1", "author": "Ionic Framework", "homepage": "https://ionicframework.com/", "scripts": { "ng": "ng", "start": "ng serve --port 4200 --poll=2000", "build": "ng build", "test": "ng test", "lint": "ng lint", "e2e": "ng e2e" }, "private": true, "dependencies": { "@angular-slider/ngx-slider": "^2.0.4", "@angular/animations": "^14.2.7", "@angular/cdk": "^14.2.7", "@angular/common": "^14.0.0", "@angular/core": "^14.0.0", "@angular/forms": "^14.0.0", "@angular/material": "^14.2.7", "@angular/platform-browser": "^14.0.0", "@angular/platform-browser-dynamic": "^14.0.0", "@angular/router": "^14.0.0", "@capacitor/app": "1.1.1", "@capacitor/browser": "^4.0.1", "@capacitor/camera": "^4.0.1", "@capacitor/core": "3.6.0", "@capacitor/filesystem": "^4.0.1", "@capacitor/geolocation": "^4.0.1", "@capacitor/haptics": "1.1.4", "@capacitor/status-bar": "1.0.8", "@ionic/angular": "^6.1.9", "@ionic/pwa-elements": "^3.1.1", "@teamhive/lottie-player": "^1.0.0", "add": "^2.0.6", "angularx-social-login": "^4.1.0", "apple-signin-auth": "^1.7.5", "card-validator": "^8.1.1", "compressorjs": "^1.1.1", "crypto-js": "^4.1.1", "firebase": "^9.15.0", "html-entities": "^2.3.3", "libphonenumber-js": "^1.10.12", "ng": "^0.0.0", "ngx-cookie-service": "^14.0.1", "ngx-device-detector": "^4.0.1", "ngx-infinite-scroll": "^10.0.1", "ngx-toggle-switch": "^2.0.5", "ngx-ui-switch": "^1.6.0", "ngx-webcam": "^0.4.1", "rxjs": "~6.6.0", "scriptjs": "^2.5.9", "socket.io-client": "^2.5.0", "swiper": "^8.4.2", "tslib": "^2.2.0", "zone.js": "~0.11.4" }, "devDependencies": { "@angular-devkit/build-angular": "^14.2.6", "@angular-eslint/builder": "~13.0.1", "@angular-eslint/eslint-plugin": "~13.0.1", "@angular-eslint/eslint-plugin-template": "~13.0.1", "@angular-eslint/template-parser": "~13.0.1", "@angular/cli": "^14.2.6", "@angular/compiler": "^14.0.0", "@angular/compiler-cli": "^14.0.0", "@angular/language-service": "^14.0.0", "@capacitor/cli": "3.6.0", "@ionic/angular-toolkit": "^6.0.0", "@types/jasmine": "~3.6.0", "@types/jasminewd2": "~2.0.3", "@types/node": "^12.11.1", "@types/socket.io-client": "^3.0.0", "@typescript-eslint/eslint-plugin": "5.3.0", "@typescript-eslint/parser": "5.3.0", "eslint": "^7.6.0", "eslint-plugin-import": "2.22.1", "eslint-plugin-jsdoc": "30.7.6", "eslint-plugin-prefer-arrow": "1.2.2", "jasmine-core": "~3.8.0", "jasmine-spec-reporter": "~5.0.0", "karma": "~6.3.2", "karma-chrome-launcher": "~3.1.0", "karma-coverage": "~2.0.3", "karma-coverage-istanbul-reporter": "~3.0.2", "karma-jasmine": "~4.0.0", "karma-jasmine-html-reporter": "^1.5.0", "protractor": "~7.0.0", "ts-node": "~8.3.0", "typescript": "~4.7.3" }, "description": "An Ionic project" } Can someone help me with this? Continue reading...