Error starting ionic with Firebase

[Ferispe]

I created a project using the command ionic start Caregiver3AAA blank --type=ionic-angular and installed angular / fire by the command npm installnpm install firebase angularfire2 --save` however when starting the project the following error appeared:

what may have happened?

[starlley]

Delete the folder node_modules and run npm cache clean –force and npm install again!

If this not solve your problem tell here!