Getting Blank page while installing the App.

[deepwebzia]

App was working fine just a hours ego. And suddenly m start getting these errors. Not only this single App but some of other app those are under development start getting the same errors. Also Noticed that on GitHub i noticed the same issues mentioned recently. That mean it not only me that facing the same issue On same time.
https://github.com/Kyon147/laravel-shopify/issues/296

I think it's due to some updates on shopify App Bridge lib. 

i have already updated to App Bridge 4.0.0 but still getting errors. 

Thanks