App crashing on launch on Test Flight

My app is crashing on Launch in Test Flight and Console only gives me the information below which doesn’t tell me what I need to fix in my app for it to stop crashing. I’ve looked at the Documents available and I didn’t find them helpful.

How can I find out what I need to fix in my app? Any help would be greatly appreciated!

• Unhandled JS Exception: TypeError: undefined is not a function (Hermes) • *** Terminating app due to uncaught exception 'RCTFatalException' → SIGABRT • UIKit/setRootViewController: shows up in the native backtrace

App crashing on launch on Test Flight
 
 
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