Before routerAnimation completed and change route immediately

[DanielYKPan]

First of all, good demo.

The current angular version of this demo project is 4.2.0-rc.1 and it works fine.

But when I update to angular version 4.2.5, there is an error running the demo.
The error occurs when I switch between two routes before each routerAnimation completed
Here is the console error message:
ERROR Error: animation building failed:query(".image")returned zero elements. (Usequery(".image", { optional: true })if you wish to allow this.)