Can no longer edit one of my PowerApps

[KC]

PowerApps version: 3.19022.17

AppId: dce7de14-c9ea-4af9-89c7-5e74e34f59ea

As of about 30 minutes ago, when trying to edit and test this app, my iPad screen went completely white 

I saved the app in the editor and closed it and tried reopening it

Now I keep getting the error message:

Error Opening the File

Contract Failure: Unspecified

Tried:

Cleared the browser cache

Restarted the browser

Restored app to a previous version (several attempts)

Still get the error message

Other apps do not seem to be affected.

[AlanC · Accepted solution]

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

[KC]

@AlanC 

@Mr-Dang-MSFT 

I can now edit the app, Thank you both.