Undefined symbols for architecture arm64

[iamakg]

I am unable to run the my app on an actual iPhone 12 device, please see details below:

Environment

System:
OS: macOS 11.6
CPU: (8) x64 Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
Memory: 339.46 MB / 16.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 14.17.6 - ~/.nvm/versions/node/v14.17.6/bin/node
Yarn: 1.22.11 - /usr/local/bin/yarn
npm: 6.14.15 - ~/.nvm/versions/node/v14.17.6/bin/npm
Watchman: Not Found
Managers:
CocoaPods: 1.10.2 - /usr/local/bin/pod
SDKs:
iOS SDK:
Platforms: iOS 14.5, DriverKit 20.4, macOS 11.3, tvOS 14.5, watchOS 7.4
Android SDK: Not Found
IDEs:
Android Studio: 2020.3 AI-203.7717.56.2031.7784292
Xcode: 12.5.1/12E507 - /usr/bin/xcodebuild
Languages:
Java: 10.0.1 - /usr/bin/javac
npmPackages:
@react-native-community/cli: Not Found
react: ^17.0.2 => 17.0.2
react-native: 0.64.2 => 0.64.2
react-native-macos: Not Found
npmGlobalPackages:
react-native: Not Found

Steps to Reproduce

Tried running the app on iPhone 12 device. It works on a simulator though.

Expected Behavior

Expecting the app to launch.

Actual Behavior

Undefined symbols for architecture arm64:
"OBJC_CLASS$_RCTConvert", referenced from:
objc-class-ref in RNCalendarEvents.o
"_RCTRegisterModule", referenced from:
+[RNCalendarEvents load] in RNCalendarEvents.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[ipoogleduck]

I'm getting this same issue, did you ever find a solution?

[Milker90]

change s.dependency 'React' to s.dependency 'React-Core' in RNCalendarEvents.podspec file will resolve this question