I am using theme in powerbuilder application and when it is trying to retrieve huge data and waiting for the response from 3rd parties for a while, the application appears as a black screen. I have checked removing the theme, it goes to not responding mode but not the black screen. Is there any way to resolve this issue?

I got one document on the below link 

https://docs.appeon.com/pb2022/troubleshooting_guide/tr_140.html

I am getting the same issue like this once theme is applied.