can not build in iMac18,3[Catalina10.15.4] debug Error: Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65

uport-mobile can not build in iMac.

Desktop (please complete the following information):

OS: [iMac18,3(Catalina10.15.4])]
```
$ node --version
v10.20.0
```

Additional context compile log

$ git clone https://github.com/uport-project/uport-mobile.git
$ yarn global add react-native-cli 
$ yarn
$ react-native run-ios --verbose

The following build commands failed:
    CompileC /Users/yamada/blockchain/uport/uport-mobile/ios/build/uPortMobile/Build/Intermediates.noindex/RNFirebase.build/Debug-iphonesimulator/RNFirebase.build/Objects-normal/x86_64/RNFirebaseAnalytics.o RNFirebase/analytics/RNFirebaseAnalytics.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
(1 failure)

debug Error: Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65. To debug build logs further, consider building your app with Xcode.app, by opening uPortMobile.xcworkspace

** BUILD FAILED **

The following build commands failed:
    CompileC /Users/yamada/blockchain/uport/uport-mobile/ios/build/uPortMobile/Build/Intermediates.noindex/RNFirebase.build/Debug-iphonesimulator/RNFirebase.build/Objects-normal/x86_64/RNFirebaseAnalytics.o RNFirebase/analytics/RNFirebaseAnalytics.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
(1 failure)

    at ChildProcess.buildProcess.on.code (/Users/yamada/blockchain/uport/uport-mobile/node_modules/@react-native-community/cli/build/commands/runIOS/runIOS.js:246:16)
    at ChildProcess.emit (events.js:198:13)
    at maybeClose (internal/child_process.js:982:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)

in yarn.lock the react-native-firebase version is 5.6.0.

react-native-firebase@^5.2.5:
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/react-native-firebase/-/react-native-firebase-5.6.0.tgz#6f6123f53cb73477915dd55c55f3e1de91db38d2"
   integrity sha512-I+o3zNLdIz4pxWTCSZH70M1BcPl+SdqKQfurOT0sWcaMSL2ecDqVy0PCTmN7ORt7/Z879Er6PLgA/psjArQlmw==
   dependencies:
     opencollective-postinstall "^2.0.0"
     prop-types "^15.7.2"

uport-project / uport-mobile

can not build in iMac18,3[Catalina10.15.4] debug Error: Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65 #215