在离子应用程序的--prod过程中出现以下错误
Cannot determine the module for class OverlayPortal in
/Users/tejashripatange/Documents/Project/KGKLive/node_modules/ionic-angular/components/app/overlay-portal.d.ts!
Add OverlayPortal to the NgModule to fix it. Cannot determine the module for class IonicApp in
/Users/tejashripatange/Documents/Project/KGKLive/node_modules/ionic-angular/components/app/app-root.d.ts!
Add IonicApp to the NgModule to fix it. Cannot determine the module for class ClickBlock in
/Users/tejashripatange/Documents/Project/KGKLive/node_modules/ionic-angular/components/app/click-block.d.ts!
Add ClickBlock to the NgModule to fix it.