App Crashes instantly when using TestFlight

I developed an application using React Native and the help of expo. The app is fully functioning using Expo Go, however, when I upload a build and test it through TestFlight the app instantly crashes when opened and I am struggling to be able to read through the crash report.

Below is the crash report, any help or direction would be greatly appreciated.

The crash report you posted was for the simulator, which doesn’t gel with your description of a TestFlight problem, because TestFlight only works on real devices.

Regardless, that crash report matches the symptoms described in Language Exception from RCTFatal.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

i have the same problem, do you fixed it?

App Crashes instantly when using TestFlight
 
 
Q