TypeError: Cannot read property 'unsubscribe' of undefined
   at ProductsComponent.ngOnDestroy (/var/task/dist/laline/server/main.js:51369:33)
   at executeOnDestroys (/var/task/dist/laline/server/main.js:138772:32)
   at cleanUpView (/var/task/dist/laline/server/main.js:138675:9)
   at destroyViewTree (/var/task/dist/laline/server/main.js:138501:21)
   at destroyLView (/var/task/dist/laline/server/main.js:138653:9)
   at RootViewRef.destroy (/var/task/dist/laline/server/main.js:154046:9)
   at /var/task/dist/laline/server/main.js:161093:52
   at Array.forEach (<anonymous>)
   at ApplicationRef.ngOnDestroy (/var/task/dist/laline/server/main.js:161093:29)
   at /var/task/dist/laline/server/main.js:142594:55