I am trying to run a lottie animation inside a container but I don't see it playing. The container is part of a stack which also contains a button. The text value of button is displayed after a remote call is finished. Meanwhile, The container is supposed to show the lottie animation. The container's visibility is dependent on a boolean variable called "isLoading". However when isLoading is true, I only see container but no animation. What could I be doing wrong here? In my page design I am able to see the lottie animation but not in test mode.