Blank white screen on debug mode

[el-lsan]

After upgrading to RN >= 51 i'm getting blank white screen on both android and iOS!
To reproduce:

• npm install -g react-native-git-upgrade
• react-native-git-upgrade 0.51.0 or `react-native-git-upgrade
• clean project, try running project and then enable debug js remotely option

[Camochase]

I cannot say for sure but this is probably because newer react native versions use the entry point index.js instead of 2 seperate files (index.android.js and index.ios.js)