运行项目到模拟器报错：
Could not find module 'Lottie' for target '×86_64-apple-ios-simulator'; found:
arm64-apple-ios-simulator, at: /Users/xx/Library/Developer/Xcode/DerivedData/
xxx-bqxtwgelwarnqndluiezbyrgldir/Index.noindex/Build/Products/Debug-
iphonesimulator/lottie-ios/Lottie.framework/Modules/Lottie.swiftmodule：
估计是不支持还是什么，大概就是这个意思，解决方法：
在Podfile文件最后加上：
post_install do |installer|
installer.pods_project.build_configurations.each do |config|
config.build_settings['ONLY_ACTIVE_ARCH'] = 'NO'
config.build_settings['VALID_ARCHS'] = 'arm64 arm64e armv7 armv7s x86_64 i386'
config.build_settings['EXCLUDED_ARCHS[sdk=iphonesimulator*]'] = 'arm64'
config.build_settings['HEADER_SEARCH_PATHS'] = '$(PROJECT_DIR)/**'
config.build_settings['DEVELOPMENT_TEAM'] = ''
end
end
然后重新pod install，运行，搞定
