Ios Xcode脚本为黑色（发生内部错误）

我有个大问题。因为两天之后，Xcode只以黑色显示故事板，如下所示。正如你可以想象的那样，这对我来说是可怕的，因为我不能在背景变黑的情况下工作

显示的错误是“发生内部错误。编辑功能可能受到限制。”

您可以在下面看到Log.txt，其中有错误

    DATE:
=================================

Monday, 1. February 2021 at 21:43:26 Central European Standard Time
2021-02-01 20:43:26 +0000



=================================
    XCODE VERSION INFO:
=================================

Version = 12.4 (12D4e)
Plugin Version = 17701
Beta Version = 1
OS Version = 11.2 (20D64)



=================================
    ERROR:
=================================

Encountered an error communicating with IBAgent-iOS. (Failure reason: IBAgent-iOS (-1) failed to launch): Failed to launch IBAgent-iOS via CoreSimulator spawn (Failure reason: Failed to spawn IBAgent-iOS on iPhone Xʀ (0670D6F0-16E0-43A4-9E6E-D2B37DCD777D, iOS 14.4, Booted)): Invalid device state

Error Domain=com.apple.InterfaceBuilder Code=-1 "Encountered an error communicating with IBAgent-iOS." UserInfo={NSLocalizedFailureReason=IBAgent-iOS (-1) failed to launch, NSUnderlyingError=0x7f94b9b4a510 {Error Domain=com.apple.CoreSimulator.SimError Code=405 "Failed to launch IBAgent-iOS via CoreSimulator spawn" UserInfo={NSLocalizedFailureReason=Failed to spawn IBAgent-iOS on iPhone Xʀ (0670D6F0-16E0-43A4-9E6E-D2B37DCD777D, iOS 14.4, Booted), NSLocalizedDescription=Failed to launch IBAgent-iOS via CoreSimulator spawn, NSUnderlyingError=0x7f94b9b6f6f0 {Error Domain=com.apple.CoreSimulator.SimError Code=405 "Invalid device state" UserInfo={NSLocalizedDescription=Invalid device state}}}}, NSLocalizedRecoverySuggestion=Please check Console.app for crash reports for "IBAgent-iOS" for further information., NSLocalizedDescription=Encountered an error communicating with IBAgent-iOS.}



=================================
    TOOL DESCRIPTION:
=================================

<IBCocoaTouchPlatformToolDescription: 0x7f94af942a40> {
| targetRuntime.identifier: IBCocoaTouchFramework-fourteenAndLater
| _roleString: System content
| deviceTypeDescription: <IBSimulatorDeviceTypeDescription: 0x7f94aef53f60> deviceType=com.apple.CoreSimulator.SimDeviceType.iPhone-XR
}



=================================
    LAUNCH CONTEXT:
=================================

<IBCocoaTouchToolLaunchContext: 0x7f9519cb45c0> {
| toolDescription.ib_verboseDescription: <IBCocoaTouchPlatformToolDescription: 0x7f94af942a40> {
| | targetRuntime.identifier: IBCocoaTouchFramework-fourteenAndLater
| | _roleString: System content
| | deviceTypeDescription: <IBSimulatorDeviceTypeDescription: 0x7f94aef53f60> deviceType=com.apple.CoreSimulator.SimDeviceType.iPhone-XR
| }
| launchPath: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Xcode/Overlays/IBAgent-iOS
| frameworkSearchPaths: (
    "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/PrivateFrameworks"
)
| toolName: IBAgent-iOS
| platformName: iphonesimulator
| applicationTool: 0
| processIdentifier: -1
| exitStatus: (null)
| signalStatus: (null)
}



=================================
    EXECUTION CONTEXT:
=================================

<IBSimulatorToolCoreSimulatorBootedCLIExecutionContext: 0x7f94aafaa880 busyCount=0, Idle for 0.0 secs> {
| device: iPhone Xʀ (0670D6F0-16E0-43A4-9E6E-D2B37DCD777D, iOS 14.4, Booted)
}



=================================
    DEVICE:
=================================

iPhone Xʀ (0670D6F0-16E0-43A4-9E6E-D2B37DCD777D, iOS 14.4, Booted)



=================================
    TOOL MANAGER:
=================================

<IBCocoaTouchToolManager: 0x7f94aef33af0>



=================================
    REASON FOR REQUESTING TOOL:
=================================

Preflighting tools for opening document <IBStoryboardDocument: 0x7f94bb9ffa00>: <IBCocoaTouchTargetRuntime: 0x7f94aef42bd0>



=================================
    XCODE BACKTRACE:
=================================

  0   +[IBPlatformToolFailureHandler failureHandlerWithContext:failure:diagnosticsHandlerBlock:] (in IDEInterfaceBuilderKit)
  1   +[IBAbstractInterfaceBuilderPlatformToolManager _THREADSAFE_injectDiagnosticsHandlerWithFailureContext:intoError:forLaunchingToolWithError:] (in IDEInterfaceBuilderKit)
  2   +[IBAbstractInterfaceBuilderPlatformToolManager _THREADSAFE_launchNewToolWithLaunchContext:executionContext:toolProxyClass:proxyDelegate:failureContext:requestingMethod:error:forReason:] (in IDEInterfaceBuilderKit)
  3   __117-[IBAbstractInterfaceBuilderPlatformToolManager asyncLaunchNewToolWithDescription:queue:completionHandler:forReason:]_block_invoke.429 (in IDEInterfaceBuilderKit)
  4   _dispatch_call_block_and_release (in libdispatch.dylib)
  5   _dispatch_client_callout (in libdispatch.dylib)
  6   _dispatch_lane_serial_drain (in libdispatch.dylib)
  7   _dispatch_lane_invoke (in libdispatch.dylib)
  8   _dispatch_workloop_worker_thread (in libdispatch.dylib)
  9   _pthread_wqthread (in libsystem_pthread.dylib)
 10   start_wqthread (in libsystem_pthread.dylib)




=================================
    SDKS:
=================================

iOS 14.4 (iphoneos14.4):
version = 14.4
platform = com.apple.platform.iphoneos
versionInfo = {
    BuildID = "34AA5D88-518E-11EB-91C4-72143A615026";
    ProductBuildVersion = 18D46;
    ProductCopyright = "1983-2021 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "14.4";
}

macOS 11.1 (macosx11.1):
version = 11.1
platform = com.apple.platform.macosx
versionInfo = {
    ProductBuildVersion = 20C63;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = macOS;
    ProductUserVisibleVersion = "11.1";
    ProductVersion = "11.1";
    iOSSupportVersion = "14.3";
}

Simulator - iOS 14.4 (iphonesimulator14.4):
version = 14.4
platform = com.apple.platform.iphonesimulator
versionInfo = {
    BuildID = "34AA5D88-518E-11EB-91C4-72143A615026";
    ProductBuildVersion = 18D46;
    ProductCopyright = "1983-2021 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "14.4";
}

Simulator - watchOS 7.2 (watchsimulator7.2):
version = 7.2
platform = com.apple.platform.watchsimulator
versionInfo = {
    BuildID = "8D9D1CD2-32F3-11EB-B18E-209C67F7BDAB";
    ProductBuildVersion = 18S561;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Watch OS";
    ProductVersion = "7.2";
}

watchOS 7.2 (watchos7.2):
version = 7.2
platform = com.apple.platform.watchos
versionInfo = {
    BuildID = "8D9D1CD2-32F3-11EB-B18E-209C67F7BDAB";
    ProductBuildVersion = 18S561;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Watch OS";
    ProductVersion = "7.2";
}

Simulator - iOS 14.4 (iphonesimulator14.4):
version = 14.4
platform = com.apple.platform.iphonesimulator
versionInfo = {
    BuildID = "34AA5D88-518E-11EB-91C4-72143A615026";
    ProductBuildVersion = 18D46;
    ProductCopyright = "1983-2021 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "14.4";
}

tvOS 14.3 (appletvos14.3):
version = 14.3
platform = com.apple.platform.appletvos
versionInfo = {
    BuildID = "E3F85AF8-32C4-11EB-9F1B-1F54C5D7F887";
    ProductBuildVersion = 18K559;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Apple TVOS";
    ProductVersion = "14.3";
}

tvOS 14.3 (appletvos14.3):
version = 14.3
platform = com.apple.platform.appletvos
versionInfo = {
    BuildID = "E3F85AF8-32C4-11EB-9F1B-1F54C5D7F887";
    ProductBuildVersion = 18K559;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Apple TVOS";
    ProductVersion = "14.3";
}

Simulator - watchOS 7.2 (watchsimulator7.2):
version = 7.2
platform = com.apple.platform.watchsimulator
versionInfo = {
    BuildID = "8D9D1CD2-32F3-11EB-B18E-209C67F7BDAB";
    ProductBuildVersion = 18S561;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Watch OS";
    ProductVersion = "7.2";
}

iOS 14.4 (iphoneos14.4):
version = 14.4
platform = com.apple.platform.iphoneos
versionInfo = {
    BuildID = "34AA5D88-518E-11EB-91C4-72143A615026";
    ProductBuildVersion = 18D46;
    ProductCopyright = "1983-2021 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "14.4";
}

watchOS 7.2 (watchos7.2):
version = 7.2
platform = com.apple.platform.watchos
versionInfo = {
    BuildID = "8D9D1CD2-32F3-11EB-B18E-209C67F7BDAB";
    ProductBuildVersion = 18S561;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Watch OS";
    ProductVersion = "7.2";
}

Simulator - tvOS 14.3 (appletvsimulator14.3):
version = 14.3
platform = com.apple.platform.appletvsimulator
versionInfo = {
    BuildID = "E3F85AF8-32C4-11EB-9F1B-1F54C5D7F887";
    ProductBuildVersion = 18K559;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Apple TVOS";
    ProductVersion = "14.3";
}

macOS 11.1 (macosx11.1):
version = 11.1
platform = com.apple.platform.macosx
versionInfo = {
    ProductBuildVersion = 20C63;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = macOS;
    ProductUserVisibleVersion = "11.1";
    ProductVersion = "11.1";
    iOSSupportVersion = "14.3";
}

DriverKit 20.2 (driverkit.macosx20.2):
version = 20.2
platform = com.apple.platform.macosx
versionInfo = {
}

Simulator - tvOS 14.3 (appletvsimulator14.3):
version = 14.3
platform = com.apple.platform.appletvsimulator
versionInfo = {
    BuildID = "E3F85AF8-32C4-11EB-9F1B-1F54C5D7F887";
    ProductBuildVersion = 18K559;
    ProductCopyright = "1983-2020 Apple Inc.";
    ProductName = "Apple TVOS";
    ProductVersion = "14.3";
}

日期：
=================================
2001年1月1日，星期一。2021年2月21:43:26中欧标准时间
2021-02-01 20:43:26 +0000
=================================
XCODE版本信息：
=================================
版本=12.4（12D4e）
插件版本=17701
测试版=1
操作系统版本=11.2（20D64）
=================================
错误：
=================================
与iAgent iOS通信时遇到错误。（失败原因：iAgent iOS（-1）无法启动）：无法通过CoreSimulator spawn启动iAgent iOS（失败原因：无法在iPhone Xʀ上生成iAgent iOS（0670D6F0-16E0-43A4-9E6E-D2B37DCD777D，iOS 14.4，已启动））：设备状态无效
Error Domain=com.apple.InterfaceBuilder Code=-1“与iAgent iOS通信时遇到错误。UserInfo={NSLocalizedFailureReason=iAgent iOS（-1）未能启动，NSUnderlyingError=0x7f94b9b4a510{Error Domain=com.apple.CoreSimulator.SimError Code=405“未能通过CoreSimulator spawn启动iOS”UserInfo={NSLocalizedFailureReason=未能在iPhone Xʀ上生成iAgent iOS（0670D6F0-16E0-43A4-9E6E-D2B37DCD777D，iOS 14.4，已启动），NSLocalizedDescription=未能通过CoreSimulator spawn启动iAgent iOS，NSUnderlyingError=0x7f94b9b6f6f0{错误域=com.apple.CoreSimulator.SimError代码=405“无效设备状态”用户信息={NSLocalizedDescription=无效设备状态}}}}，nsLocalizedRecoverysSuggestion=请检查Console.app以获取“iAgent iOS”的崩溃报告，以了解更多信息。NSLocalizedDescription=与iAgent iOS通信时遇到错误。}
=================================
工具说明：
=================================
{
|targetRuntime.identifier:IBMCoatouchFramework Fourteen及更高版本
|\角色限制：系统内容
|deviceType说明：deviceType=com.apple.CoreSimulator.SimDeviceType.iPhone-XR
}
=================================
启动上下文：
=================================
{
|toolDescription.ib_详细描述：{
|| targetRuntime.identifier:IBMCoCoatouchFramework十四及以后
|| |角色限制：系统内容
|| deviceType描述：deviceType=com.apple.CoreSimulator.SimDeviceType.iPhone-XR
| }
|启动路径：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Xcode/Overlays/IBAgent-iOS
|框架搜索路径：(
“/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/privateframes”
)
|工具名称：iAgent iOS
|平台名称：iphonesimulator
|应用工具：0
|进程标识符：-1
|exitStatus:（空）
|信号状态：（空）
}
=================================
执行上下文：
=================================
{
|设备：iPhone Xʀ（0670D6F0-16E0-43A4-9E6E-D2B37DCD777D，iOS 14.4，已启动）
}
=================================
设备：
=================================
iPhone Xʀ（0670D6F0-16E0-43A4-9E6E-D2B37DCD777D，iOS 14.4，已启动）
=================================
工具管理器：
=================================
=================================
请求工具的原因：
=================================
用于打开文档的预渲染工具：
=================================
XCODE回溯：
=================================
0+[IBPlatformToolFailureHandler failureHandlerWithContext:failure:diagnosticsHandlerBlock:]（在IDEInterfaceBuilderKit中）
1+[IBBStractInterfaceBuilderPlatformToolManager\u THREADSAFE\u injectDiagnosticsHandlerWithFailureContext:intoError:forLaunchingToolWithError:（在IDEInterfaceBuilderKit中）
2+[IBAbstractInterfaceBuilderPlatformToolManager\u THREADSAFE\u launchNewToolWithLaunchContext:executionContext:toolProxyClass:proxyDelegate:failureContext:requestingMethod:error:forReason:（在IDEInterfaceBuilderKit中）
3 uu 117-[IBBStractInterfaceBuilderplatformToolManager asyncLaunchNewToolWithDescription:queue:completionHandler:forReason:][u block_invoke.429（在IDEInterfaceBuilderKit中）
4调度调用块和释放（在libdispatch.dylib中）
5调度客户端调用（在libdispatch.dylib中）
6调度通道串行排水管（在libdispatch.dylib中）
7_dispatch_lane_invoke（在libdispatch.dylib中）
8_dispatch_workloop_worker_线程（在libdispatch.dylib中）
9_pthread_wqthread（在libsystem_pthread.dylib中）
10 start_wqthread（在libsystem_pthread.dylib中）
=================================
SDK：
=================================
iOS 14.4（iphoneos14.4）：
版本=14.4
platform=com.apple.platform.iphoneos
版本信息={
BuildID=“34AA5D88-518E-11EB-91C4-72143A615026”；
ProductBuildVersion=18D46；
ProductCopyright=“1983-2021苹果公司”；
ProductName=“iPhone OS”；
ProductVersion=“14.4”；
}
macOS 11.1（macosx11.1）：
版本=11.1
平台=com.apple.platform.macosx
版本信息={
ProductBuildVersion=20C63；
ProductCopyright=“1983-2020苹果公司”；
ProductName=macOS；
ProductUserVisibleVersion=“11.1”；
ProductVersion=“11.1”；
iOSSupportVersion=“14.3”；
}
模拟器-iOS 14.4（iPhoneSimulator 14.4）：
版本=14.4
platform=com.apple.platform.iphonesimulator
版本信息={
BuildID=“34AA5D88-518E-11EB-91C4-72143A615026”；
ProductBuildVersion=18D46；
ProductCopyright=“1983-2021苹果公司”；
ProductName=“iPhone OS”；
ProductVersion=“14.4”；
}
模拟器-watchOS 7.2（WatchSimulator 7.2）：
版本=7.2
平台=com.apple.platform.watchsimulator
版本信息={
BuildID=“8D9D1CD2-32F3-11EB-B18E-209C67F7BDAB”；
ProductBuildVersion=18S561；
ProductCopyright=“198