ERROR in ./node_modules/angular5-social-login/angular5-social-login.umd.js
Module not found: Error: Can't resolve 'rxjs/BehaviorSubject' in 'C:\Users\Stephen Jawahar\login\node_modules\angular5-social-login'
i 「wdm」: Failed to compile.
ERROR in node_modules/angular5-social-login/auth.service.d.ts(1,10): error TS2305: Module '"C:/Users/Stephen Jawahar/login/node_modules/rxjs/Observable"' has no exported member 'Observable'.
node_modules/rxjs/Observable.d.ts(1,15): error TS2307: Cannot find module 'rxjs-compat/Observable'.
src/app/app.component.ts(13,38): error TS2304: Cannot find name 'OnInit'.
src/app/app.module.ts(21,23): error TS2304: Cannot find name 'GoogleLoginProvid'.
ERROR in ./node_modules/angular5-social-login/angular5-social-login.umd.js Module not found: Error: Can't resolve 'rxjs/BehaviorSubject' in 'C:\Users\Stephen Jawahar\login\node_modules\angular5-social-login' i 「wdm」: Failed to compile. ERROR in node_modules/angular5-social-login/auth.service.d.ts(1,10): error TS2305: Module '"C:/Users/Stephen Jawahar/login/node_modules/rxjs/Observable"' has no exported member 'Observable'. node_modules/rxjs/Observable.d.ts(1,15): error TS2307: Cannot find module 'rxjs-compat/Observable'. src/app/app.component.ts(13,38): error TS2304: Cannot find name 'OnInit'. src/app/app.module.ts(21,23): error TS2304: Cannot find name 'GoogleLoginProvid'.
can someone help me with this error