I got an error when importing the module NgxChoosyModule.

[savasda]

Angular 4.4.6
The application is built with lazy loading modules.

core.es5.js:1020 ERROR Error: Uncaught (in promise): Error: NgxChoosyModule is already loaded. Import it in the Parent only
Error: NgxChoosyModule is already loaded. Import it in the Parent only
at new NgxChoosyModule (ngx-choosy.module.js:12)
at createClass (core.es5.js:9529)
at createProviderInstance$1 (core.es5.js:9503)
at initNgModule (core.es5.js:9456)
at new NgModuleRef (core.es5.js:10553)
at createNgModuleRef (core.es5.js:10537)
at Object.debugCreateNgModuleRef [as createNgModuleRef] (core.es5.js:12822)
at NgModuleFactory.create (core.es5.js:13830)
at MapSubscriber.eval [as project] (router.es5.js:3520)
at MapSubscriber._next (map.js:79)
at new NgxChoosyModule (ngx-choosy.module.js:12)
at createClass (core.es5.js:9529)
at createProviderInstance$1 (core.es5.js:9503)
at initNgModule (core.es5.js:9456)
at new NgModuleRef (core.es5.js:10553)
at createNgModuleRef (core.es5.js:10537)
at Object.debugCreateNgModuleRef [as createNgModuleRef] (core.es5.js:12822)
at NgModuleFactory.create (core.es5.js:13830)
at MapSubscriber.eval [as project] (router.es5.js:3520)
at MapSubscriber._next (map.js:79)
at resolvePromise (zone.js:824)
at resolvePromise (zone.js:795)
at eval (zone.js:873)
at ZoneDelegate.invokeTask (zone.js:425)
at Object.onInvokeTask (core.es5.js:3881)
at ZoneDelegate.invokeTask (zone.js:424)
at Zone.runTask (zone.js:192)
at drainMicroTaskQueue (zone.js:602)
at