#StackBounty: #android #react-native #mobx #mobx-react Can't find variable: Symbol from <unknown> (on Physical React Native A…

Bounty: 100

Running the newest version of RN, I get the below error. It only occurs however on a physical Android device (tried two different ones) – Android simulators and iOS are fine.

Any ideas on whether this is some kind of caching issue (which I doubt based on all my clearing techniques) or a code error?

I have tried following advice on questions that are reasonably similar to this, but no luck.

Worth noting that I have mobx installed which has caused this error message before, although it has always shown to come from there rather than showing unknown in the error’s description.

Many thanks!

In Android Studio I get this error (unsure if the two are related):

E/ReactNativeJS: Can’t find variable: Symbol
E/ReactNativeJS: Module AppRegistry is not a registered callable module (calling runApplication)

React Native Error Screenshot:

Error screenshot


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