通過(guò)“ pod update”更新Firebase后，出現(xiàn)如下錯(cuò)誤：ld: warning: directory not found for option '-F/Users/bennysantoso/Library/Developer/Xcode/DerivedData/FCM-atfcxuircoryufazlomgwfgmvaqm/Build/Products/Debug-iphonesimulator/GoogleToolboxForMac'ld: framework not found GoogleToolboxForMacclang: error: linker command failed with exit code 1 (use -v to see invocation)這是我的Podfile：# Uncomment this line to define a global platform for your project# platform :ios, '9.0'pod 'Firebase/Core'pod 'Firebase/Messaging'target 'BB' do  # Comment this line if you're not using Swift and don't want to use dynamic frameworks  use_frameworks!  # Pods for BB  target 'BBTests' do    inherit! :search_paths    # Pods for testing  end  target 'BBUITests' do    inherit! :search_paths    # Pods for testing  endend有人知道這個(gè)錯(cuò)誤嗎？我尋找GoogleToolboxForMac和Firebase的關(guān)系，但是我只獲得了一些信息。僅供參考，我使用Swift 2.3和Firebase 3.8.0。感謝您提供的任何幫助。謝謝！