An issue with when updating to watchOS 5.0.1

I could not update my series 3 watch to new WatchOS 5.0.1. using my Iphone X. Although I have met all the requirements such as:

- watch on charger with at least 50% charged.

- In range of your phone connected to wi-fi

- Phone is fully charged.

When I press installation,it get me out of the apple watch application to home screen.

I have restarted both the handset and the watch but still I could not update!

Anyone has come across the similar issue!