Reference https://github.com/Sh1d0w/multi_image_picker/issues/250
flutter_module introduced multi_image_picker plug when the build error, because flutter_module is created by default oc engineering, 4.5.9 version of multi_image_picker is mixed project.
Open flutter_module .ios project, the new file a swift, xcode will automatically recognize and prompted to create the bridge file, create, join use_frameworks in engineering podfile in! On it