title: npx pod-install error. Aborting run and An unexpected error was encountered
body: <p>When I successfully installed create-react-native-app without getting an error, This warning showed up and when I type that, the terminal gave me an error or warning like that: <code>An unexpected error was encountered. Please report it as a bug:</code></p>
  <p>Is there anyone who got code this error code or like that? Please help me to be able to solve this problem.</p>
  <pre><code>⚠️  Before running your app on iOS, make sure you have CocoaPods installed and initialize the project:
  
    cd travel-app-react-native/ios
    npx pod-install
  
  oguzhanatalay@Oguzhans-Mac Desktop % cd travel-app-react-native 
  oguzhanatalay@Oguzhans-Mac travel-app-react-native % npx pod-install
  npx: installed 1 in 6.118s
  Scanning for pods...
  1.10.0
  &gt; pod install
  Installing unimodules:
   expo-constants@9.2.0 from ../node_modules/expo-constants/ios
   expo-error-recovery@1.3.0 from ../node_modules/expo-error-recovery/ios
   expo-file-system@9.2.0 from ../node_modules/expo-file-system/ios
   expo-font@8.3.0 from ../node_modules/expo-font/ios
   expo-image-loader@1.2.0 from ../node_modules/expo-image-loader/ios
   expo-keep-awake@8.3.0 from ../node_modules/expo-keep-awake/ios
   expo-linear-gradient@8.3.1 from ../node_modules/expo-linear-gradient/ios
   expo-location@9.0.1 from ../node_modules/expo-location/ios
   expo-permissions@9.3.0 from ../node_modules/expo-permissions/ios
   expo-splash-screen@0.6.2 from ../node_modules/expo-splash-screen/ios
   expo-sqlite@8.4.0 from ../node_modules/expo-sqlite/ios
   expo-updates@0.3.5 from ../node_modules/expo-updates/ios
   unimodules-app-loader@1.3.0 from ../node_modules/unimodules-app-loader/ios
   unimodules-barcode-scanner-interface@5.3.0 from ../node_modules/unimodules-barcode-scanner-interface/ios
   unimodules-camera-interface@5.3.0 from ../node_modules/unimodules-camera-interface/ios
   unimodules-constants-interface@5.3.0 from ../node_modules/unimodules-constants-interface/ios
   unimodules-core@5.5.1 from ../node_modules/@unimodules/core/ios
   unimodules-face-detector-interface@5.3.0 from ../node_modules/unimodules-face-detector-interface/ios
   unimodules-file-system-interface@5.3.0 from ../node_modules/unimodules-file-system-interface/ios
   unimodules-font-interface@5.3.0 from ../node_modules/unimodules-font-interface/ios
   unimodules-image-loader-interface@5.3.0 from ../node_modules/unimodules-image-loader-interface/ios
   unimodules-permissions-interface@5.3.0 from ../node_modules/unimodules-permissions-interface/ios
   unimodules-react-native-adapter@5.6.0 from ../node_modules/@unimodules/react-native-adapter/ios
   unimodules-sensors-interface@5.3.0 from ../node_modules/unimodules-sensors-interface/ios
   unimodules-task-manager-interface@5.3.0 from ../node_modules/unimodules-task-manager-interface/ios
  
  Auto-linking React Native modules for target `travelappreactnative`: RNGestureHandler, RNReanimated, and RNScreens
  Analyzing dependencies
  Fetching podspec for `DoubleConversion` from `../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec`
  Fetching podspec for `Folly` from `../node_modules/react-native/third-party-podspecs/Folly.podspec`
  Fetching podspec for `glog` from `../node_modules/react-native/third-party-podspecs/glog.podspec`
  Downloading dependencies
  Installing CocoaAsyncSocket (7.6.4)
  Installing CocoaLibEvent (1.0.0)
  Installing DoubleConversion (1.1.6)
  Installing EXConstants (9.2.0)
  Installing EXErrorRecovery (1.3.0)
  Installing EXFileSystem (9.2.0)
  Installing EXFont (8.3.0)
  Installing EXImageLoader (1.2.0)
  Installing EXKeepAwake (8.3.0)
  Installing EXLinearGradient (8.3.1)
  Installing EXLocation (9.0.1)
  Installing EXPermissions (9.3.0)
  Installing EXSQLite (8.4.0)
  Installing EXSplashScreen (0.6.2)
  Installing EXUpdates (0.3.5)
  Installing FBLazyVector (0.63.3)
  Installing FBReactNativeSpec (0.63.3)
  Installing Flipper (0.54.0)
  Installing Flipper-DoubleConversion (1.1.7)
  Installing Flipper-Folly (2.3.0)
  Installing Flipper-Glog (0.3.6)
  [!] /bin/bash -c 
  set -e
  #!/bin/bash
  # Copyright (c) Facebook, Inc. and its affiliates.
  #
  # This source code is licensed under the MIT license found in the
  # LICENSE file in the root directory of this source tree.
  
  set -e
  
  PLATFORM_NAME=&quot;${PLATFORM_NAME:-iphoneos}&quot;
  CURRENT_ARCH=&quot;${CURRENT_ARCH}&quot;
  
  if [ -z &quot;$CURRENT_ARCH&quot; ] || [ &quot;$CURRENT_ARCH&quot; == &quot;undefined_arch&quot; ]; then
      # Xcode 10 beta sets CURRENT_ARCH to &quot;undefined_arch&quot;, this leads to incorrect linker arg.
      # it's better to rely on platform name as fallback because architecture differs between simulator and device
  
      if [[ &quot;$PLATFORM_NAME&quot; == *&quot;simulator&quot;* ]]; then
          CURRENT_ARCH=&quot;x86_64&quot;
      else
          CURRENT_ARCH=&quot;armv7&quot;
      fi
  fi
  
  export CC=&quot;$(xcrun -find -sdk $PLATFORM_NAME cc) -arch $CURRENT_ARCH -isysroot $(xcrun -sdk $PLATFORM_NAME --show-sdk-path)&quot;
  export CXX=&quot;$CC&quot;
  
  # Remove automake symlink if it exists
  if [ -h &quot;test-driver&quot; ]; then
      rm test-driver
  fi
  
  ./configure --host arm-apple-darwin
  
  # Fix build for tvOS
  cat &lt;&lt; EOF &gt;&gt; src/config.h
  /* Add in so we have Apple Target Conditionals */
  #ifdef __APPLE__
  #include &lt;TargetConditionals.h&gt;
  #include &lt;Availability.h&gt;
  #endif
  /* Special configuration for AppleTVOS */
  #if TARGET_OS_TV
  #undef HAVE_SYSCALL_H
  #undef HAVE_SYS_SYSCALL_H
  #undef OS_MACOSX
  #endif
  /* Special configuration for ucontext */
  #undef HAVE_UCONTEXT_H
  #undef PC_FROM_UCONTEXT
  #if defined(__x86_64__)
  #define PC_FROM_UCONTEXT uc_mcontext-&gt;__ss.__rip
  #elif defined(__i386__)
  #define PC_FROM_UCONTEXT uc_mcontext-&gt;__ss.__eip
  #endif
  EOF
  
  # Prepare exported header include
  EXPORTED_INCLUDE_DIR=&quot;exported/glog&quot;
  mkdir -p exported/glog
  cp -f src/glog/log_severity.h &quot;$EXPORTED_INCLUDE_DIR/&quot;
  cp -f src/glog/logging.h &quot;$EXPORTED_INCLUDE_DIR/&quot;
  cp -f src/glog/raw_logging.h &quot;$EXPORTED_INCLUDE_DIR/&quot;
  cp -f src/glog/stl_logging.h &quot;$EXPORTED_INCLUDE_DIR/&quot;
  cp -f src/glog/vlog_is_on.h &quot;$EXPORTED_INCLUDE_DIR/&quot;
  
  checking for a BSD-compatible install... /usr/bin/install -c
  checking whether build environment is sane... yes
  checking for arm-apple-darwin-strip... no
  checking for strip... strip
  checking for a thread-safe mkdir -p... ./install-sh -c -d
  checking for gawk... no
  checking for mawk... no
  checking for nawk... no
  checking for awk... awk
  checking whether make sets $(MAKE)... yes
  checking whether make supports nested variables... yes
  checking for arm-apple-darwin-gcc... /Library/Developer/CommandLineTools/usr/bin/cc -arch armv7 -isysroot 
  checking whether the C compiler works... no
  xcrun: error: SDK &quot;iphoneos&quot; cannot be located
  xcrun: error: SDK &quot;iphoneos&quot; cannot be located
  xcrun: error: SDK &quot;iphoneos&quot; cannot be located
  xcrun: error: unable to lookup item 'Path' in SDK 'iphoneos'
  /Users/oguzhanatalay/Library/Caches/CocoaPods/Pods/Release/Flipper-Glog/0.3.6-1dfd6/missing: Unknown `--is-lightweight' option
  Try `/Users/oguzhanatalay/Library/Caches/CocoaPods/Pods/Release/Flipper-Glog/0.3.6-1dfd6/missing --help' for more information
  configure: WARNING: 'missing' script is too old or missing
  configure: error: in `/Users/oguzhanatalay/Library/Caches/CocoaPods/Pods/Release/Flipper-Glog/0.3.6-1dfd6':
  configure: error: C compiler cannot create executables
  See `config.log' for more details
  
  
  Aborting run
  An unexpected error was encountered. Please report it as a bug:
  Error
      at CocoaPodsPackageManager._installAsync (/Users/oguzhanatalay/.npm/_npx/4500/lib/node_modules/pod-install/build/index.js:2:85721)
      at processTicksAndRejections (internal/process/task_queues.js:97:5)
  </code></pre>