当我尝试在Xcode的Canvas窗口中预览我的SwiftUI视图时，我的项目成功构建，但是在Canvas窗口中收到以下错误：
UVIntegration.DTXMessageError.messageRepliedWithError（“连接到已启动的交互式代理6310”，可选（错误域= com.apple.dt.ultraviolet.service代码= 17“ connectToPreviewHost：无法连接到6310：错误域= RemoteBundleLoader错误代码= 17”失败由于缺少引导符号，因此无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit” UserInfo = {NSLocalizedDescription =无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit（由于缺少引导符号）}“ UserInfo = {NSLocalizedDescription = connectToPreviewHost：连接失败6310：错误域= RemoteBundleLoader错误代码= 17“由于缺少引导符号，因此未能加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit” UserInfo = {NSLocalizedDescription =由于缺少引导符号而无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit}}）） ）UserInfo = {NSLocalizedDescription =由于缺少引导符号而无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit}}）） ）UserInfo = {NSLocalizedDescription =由于缺少引导符号而无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit}}）） ）
GenericHumanReadableError：发生意外错误messageRepliedWithError（“正在连接到已启动的交互式代理6310”，可选（错误域= com.apple.dt.xcodepreviews.service代码= 17“ connectToPreviewHost：无法连接到6310：错误域= RemoteBundleLoaderError代码= 17”由于缺少引导符号，因此无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit。UserInfo={NSLocalizedDescription=无法加载由于缺少引导符号，库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit}“ UserInfo = {NSLocalizedDescription = connectToPreviewHost：无法连接到6310：Error Domain = RemoteBundleLoaderError Code = 17“无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit由于缺少引导符号“ UserInfo = {NSLocalizedDescription =由于缺少元素而无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit自举符号}}））UserInfo = {NSLocalizedDescription =由于缺少引导符号而无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit}}））UserInfo = {NSLocalizedDescription =由于缺少引导符号而无法加载库/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/XCPreviewKit.framework/Versions/Current/XCPreviewKit}}））
清理构建文件夹，然后杀死Xcode，启动Xcode，执行完整的构建可能（有时）解决问题。然后整个马戏团又开始了。我认为这对苹果有点可耻。最令人沮丧的是（至少对我而言）文档几乎不存在。这都是反复试验。主要是错误。
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我来说两句