Cannot create property 'tf' on string

[Mujaddadi]

I am getting this in my react app

Cannot create property 'tf' on string '/./plugin-config/preloader.json'

Another error I am getting is

index.js:164 Uncaught TypeError: Cannot read property 'destroy' of undefined at Lottie.destroy

My setup include webpack 4 and React 16. I think the issue is with the animationData as when I hide it it works.