Can't run react native project for ios

I am developing react native app and i am new in react-native, firstly I have worked for android platform and successfully build apk file. Now i want to run it for ios version with the command react-native run-ios from my mackbook but it's throws an error:

note: from starting i have developed this app on macbook

user-MacBook-Pro:myApp user$ react-native run-ios
error Cannot read property 'podfile' of null. Run CLI with --verbose flag for more details.
TypeError: Cannot read property 'podfile' of null
    at warnAboutPodInstall (/Users/user/project/myApp/node_modules/@react-native-community/cli-platform-ios/build/link/warnAboutPodInstall.js:43:90)
    at Object.runIOS [as func] (Users/user/project/myApp/node_modules/@react-native-community/cli-platform-ios/build/commands/runIOS/index.js:80:36)
    at Command.handleAction (Users/user/project/myApp/node_modules/react-native/node_modules/@react-native-community/cli/build/index.js:164:23)
    at Command.listener (Users/user/project/myApp/node_modules/commander/index.js:315:8)
    at Command.emit (events.js:198:13)
    at Command.parseArgs (Users/user/project/myApp/node_modules/commander/index.js:651:12)
    at Command.parse (Users/user/project/myApp/node_modules/commander/index.js:474:21)
    at setupAndRun (Users/user/project/myApp/node_modules/react-native/node_modules/@react-native-community/cli/build/index.js:237:24)
    at Object.run (Users/user/project/myApp/node_modules/react-native/node_modules/@react-native-community/cli/build/index.js:184:11)
    at Object.<anonymous> (/usr/local/lib/node_modules/react-native-cli/index.js:117:7)

Podfile

 platform :ios, '9.0'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'

 target 'myApp' do
  # Pods for myApp
  pod 'FBLazyVector', :path => "../node_modules/react-native/Libraries/FBLazyVector"
  pod 'FBReactNativeSpec', :path => "../node_modules/react-native/Libraries/FBReactNativeSpec"
  pod 'RCTRequired', :path => "../node_modules/react-native/Libraries/RCTRequired"
  pod 'RCTTypeSafety', :path => "../node_modules/react-native/Libraries/TypeSafety"
  pod 'React', :path => '../node_modules/react-native/'
  pod 'React-Core', :path => '../node_modules/react-native/'
  pod 'React-CoreModules', :path => '../node_modules/react-native/React/CoreModules'
  pod 'React-Core/DevSupport', :path => '../node_modules/react-native/'
  pod 'React-RCTActionSheet', :path => '../node_modules/react-native/Libraries/ActionSheetIOS'
  pod 'React-RCTAnimation', :path => '../node_modules/react-native/Libraries/NativeAnimation'
  pod 'React-RCTBlob', :path => '../node_modules/react-native/Libraries/Blob'
  pod 'React-RCTImage', :path => '../node_modules/react-native/Libraries/Image'
  pod 'React-RCTLinking', :path => '../node_modules/react-native/Libraries/LinkingIOS'
  pod 'React-RCTNetwork', :path => '../node_modules/react-native/Libraries/Network'
  pod 'React-RCTSettings', :path => '../node_modules/react-native/Libraries/Settings'
  pod 'React-RCTText', :path => '../node_modules/react-native/Libraries/Text'
  pod 'React-RCTVibration', :path => '../node_modules/react-native/Libraries/Vibration'
  pod 'React-Core/RCTWebSocket', :path => '../node_modules/react-native/'

  pod 'React-cxxreact', :path => '../node_modules/react-native/ReactCommon/cxxreact'
  pod 'React-jsi', :path => '../node_modules/react-native/ReactCommon/jsi'
  pod 'React-jsiexecutor', :path => '../node_modules/react-native/ReactCommon/jsiexecutor'
  pod 'React-jsinspector', :path => '../node_modules/react-native/ReactCommon/jsinspector'
  pod 'ReactCommon/jscallinvoker', :path => "../node_modules/react-native/ReactCommon"
  pod 'ReactCommon/turbomodule/core', :path => "../node_modules/react-native/ReactCommon"
  pod 'Yoga', :path => '../node_modules/react-native/ReactCommon/yoga'

  pod 'DoubleConversion', :podspec => '../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec'
  pod 'glog', :podspec => '../node_modules/react-native/third-party-podspecs/glog.podspec'
  pod 'Folly', :podspec => '../node_modules/react-native/third-party-podspecs/Folly.podspec'

  target 'myAppTests' do
    inherit! :search_paths
    # Pods for testing
  end

  use_native_modules!
end

target 'myApp-tvOS' do
  # Pods for myApp-tvOS

  target 'myApp-tvOSTests' do
    inherit! :search_paths
    # Pods for testing
  end

end

please help me who knows the solution. Thanks in advance.