ERROR TypeError: Cannot read properties of undefined (reading 'unsubscribe')

[ddileep01]

I am using angular CLI version 13.3.5 and I was using ngx owl carousel and I was getting ERROR TypeError: Cannot read properties of undefined (reading 'unsubscribe') at push../node_modules/ngx-owl-carousel-o/fesm5/ngx-owl-carousel-o.js.CarouselComponent.ngOnDestroy.
But, at owl options I didn't found any option to provide subjects, so I was unable to send subscriptions to that owl carousel then how can you take subscriptions from my side as you reading observables.