...
/Users/cks/Android/studio_project/flutter_project/ioclient/ios/Runner/GeneratedPluginRegistrant.m -o /Users/cks/Library/Developer/Xcode/DerivedData/Runner-asuwptrwelirgzbzuhmtvjnehwhh/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Runner.build/Release-iphoneos/Runner.build/Objects-normal/arm64/GeneratedPluginRegistrant.o
/Users/cks/Android/studio_project/flutter_project/ioclient/ios/Runner/GeneratedPluginRegistrant.m:10:9: fatal error: module 'connectivity' not found
@import connectivity;
 ~~~~~~~^~~~~~~~~~~~
1 error generated.
...

** ARCHIVE FAILED **


The following build commands failed:
        CompileC /Users/cks/Library/Developer/Xcode/DerivedData/Runner-asuwptrwelirgzbzuhmtvjnehwhh/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Runner.build/Release-iphoneos/Runner.build/Objects-normal/armv7/GeneratedPluginRegistrant.o Runner/GeneratedPluginRegistrant.m normal armv7 objective-c com.apple.compilers.llvm.clang.1_0.compiler
        CompileC /Users/cks/Library/Developer/Xcode/DerivedData/Runner-asuwptrwelirgzbzuhmtvjnehwhh/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Runner.build/Release-iphoneos/Runner.build/Objects-normal/arm64/GeneratedPluginRegistrant.o Runner/GeneratedPluginRegistrant.m normal arm64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
(2 failures)