Hi @KC, I believe I have narrowed the issue to be related to a combination of two experimental features, Components and formula error management.
Here are some mitigation steps while we fix the issue, please bear with me as it requires some steps:
1- Navigate to https://create.powerapps.com
2- Open the Developer tools of your browser (Ctrl+Shft+i in chrome for example)
3- In the Console type the following command and press enter:
Contracts.checkNumberOrNull = function(){}
4- Close the developer tools window (makes things faster).
5- Open your app and open App Settings (File -> App Settings)
6- In Advanced Settings scroll down to Experimental features and disable "Formula-level error management"
7- Save your app
After reloading the page, you should be able to load your app again.
Thanks,
Alan
