title: ld: library not found for -lRCTBlob clang: error: linker command failed
body: <pre><code>&gt; Ld
  &gt; /Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/MyApp.app/MyApp
  &gt; normal x86_64 (in target 'MyApp' from project 'MyApp')
  &gt;     cd /Users/ajaysivan/MyApp/OfflineUpgrade/MyApp-offline-app/ios
  &gt;     /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
  &gt; -target x86_64-apple-ios9.0-simulator -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator13.2.sdk
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/BVLinearGradient
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/DoubleConversion
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/FBReactNativeSpec
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/Folly
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/RCTTypeSafety
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/RNDeviceInfo
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/RNVectorIcons
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-Core
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-CoreModules
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTActionSheet
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTAnimation
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTBlob
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTImage
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTLinking
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTNetwork
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTSettings
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTText
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-RCTVibration
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-cxxreact
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-jsi
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-jsiexecutor
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/React-jsinspector
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/ReactCommon
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/Sentry
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/SentryReactNative
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/Yoga
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/glog
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/react-native-config
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/react-native-geolocation
  &gt; -L/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/react-native-netinfo
  &gt; -F/Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator
  &gt; -filelist /Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Intermediates.noindex/MyApp.build/Debug-iphonesimulator/MyApp.build/Objects-normal/x86_64/MyApp.LinkFileList
  &gt; -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -object_path_lto -Xlinker /Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Intermediates.noindex/MyApp.build/Debug-iphonesimulator/MyApp.build/Objects-normal/x86_64/MyApp_lto.o
  &gt; -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -ObjC -lBVLinearGradient -lDoubleConversion -lFBReactNativeSpec -lFolly -lRCTTypeSafety -lRNDeviceInfo -lRNVectorIcons -lReact-Core -lReact-CoreModules -lReact-RCTActionSheet -lReact-RCTAnimation -lReact-RCTBlob -lReact-RCTImage -lReact-RCTLinking -lReact-RCTNetwork -lReact-RCTSettings -lReact-RCTText -lReact-RCTVibration -lReact-cxxreact -lReact-jsi -lReact-jsiexecutor -lReact-jsinspector -lReactCommon -lSentry -lSentryReactNative -lYoga -lc++ -lglog -lreact-native-config -lreact-native-geolocation -lreact-native-netinfo -lstdc++ -lz -framework Foundation -framework JavaScriptCore -ObjC -lc++ -Xlinker -sectcreate -Xlinker __TEXT
  &gt; -Xlinker __entitlements -Xlinker /Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Intermediates.noindex/MyApp.build/Debug-iphonesimulator/MyApp.build/MyApp.app-Simulated.xcent
  &gt; -framework JavaScriptCore -lRCTBlob -lRCTAnimation -lReact -lRCTActionSheet -lRCTGeolocation -lRCTImage -lRCTLinking -lRCTNetwork -lRCTSettings -lRCTText -lRCTVibration -lRCTWebSocket -lPods-MyApp -Xlinker -dependency_info -Xlinker /Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Intermediates.noindex/MyApp.build/Debug-iphonesimulator/MyApp.build/Objects-normal/x86_64/MyApp_dependency_info.dat
  &gt; -o /Users/ajaysivan/Library/Developer/Xcode/DerivedData/MyApp-fhlxfvymksoqhsglhalddkzaekrm/Build/Products/Debug-iphonesimulator/MyApp.app/MyApp
  
  .
  
  &gt; ld: library not found for -lRCTBlob clang: error: linker command
  &gt; failed with exit code 1 (use -v to see invocation)
  </code></pre>
  <p>Getting the above error when building react-native project in Xcode11. I recently upgraded to react native 0.61.5 and everything works fine on android. No Idea why it is not working on iOS.</p>
  <p>I'm really new to iOS and react-native. If you need any further information please ask.</p>