我正在尝试在我的真实设备上安装WebDruverAgent，以开始使用appium自动化应用程序。我已经按照构建WebDriverAgent xcode构建的所有步骤进行操作，但是在安装时
“链接器命令失败，退出代码为1（使用-v查看调用）”-显示此错误。
这是完整的错误： 有人可以帮我吗？
Ld /Users/siddharthkhare/Library/Developer/Xcode/DerivedData/WebDriverAgent-brdadhpuduowllgivnnvuygpwhzy/Build/Products/Debug-iphoneos/WebDriverAgentLib.framework/WebDriverAgentLib normal arm64 (in target: WebDriverAgentLib)
cd /usr/local/lib/node_modules/appium/node_modules/appium-xcuitest-driver/WebDriverAgent
export IPHONEOS_DEPLOYMENT_TARGET=9.0
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch arm64 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.0.sdk -L/Users/siddharthkhare/Library/Developer/Xcode/DerivedData/WebDriverAgent-brdadhpuduowllgivnnvuygpwhzy/Build/Products/Debug-iphoneos -F/Users/siddharthkhare/Library/Developer/Xcode/DerivedData/WebDriverAgent-brdadhpuduowllgivnnvuygpwhzy/Build/Products/Debug-iphoneos -F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F/usr/local/lib/node_modules/appium/node_modules/appium-xcuitest-driver/WebDriverAgent/Carthage/Build/iOS -F/usr/local/lib/node_modules/appium/node_modules/appium-xcuitest-driver/WebDriverAgent/Carthage/Build/Mac -filelist /Users/siddharthkhare/Library/Developer/Xcode/DerivedData/WebDriverAgent-brdadhpuduowllgivnnvuygpwhzy/Build/Intermediates.noindex/WebDriverAgent.build/Debug-iphoneos/WebDriverAgentLib.build/Objects-normal/arm64/WebDriverAgentLib.LinkFileList -install_name @rpath/WebDriverAgentLib.framework/WebDriverAgentLib -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -miphoneos-version-min=9.0 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/siddharthkhare/Library/Developer/Xcode/DerivedData/WebDriverAgent-brdadhpuduowllgivnnvuygpwhzy/Build/Intermediates.noindex/WebDriverAgent.build/Debug-iphoneos/WebDriverAgentLib.build/Objects-normal/arm64/WebDriverAgentLib_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -fobjc-arc -fobjc-link-runtime -lxml2 -framework RoutingHTTPServer -framework YYCache -compatibility_version 1 -current_version 1 -Xlinker -dependency_info -Xlinker /Users/siddharthkhare/Library/Developer/Xcode/DerivedData/WebDriverAgent-brdadhpuduowllgivnnvuygpwhzy/Build/Intermediates.noindex/WebDriverAgent.build/Debug-iphoneos/WebDriverAgentLib.build/Objects-normal/arm64/WebDriverAgentLib_dependency_info.dat -o /Users/siddharthkhare/Library/Developer/Xcode/DerivedData/WebDriverAgent-brdadhpuduowllgivnnvuygpwhzy/Build/Products/Debug-iphoneos/WebDriverAgentLib.framework/WebDriverAgentLib
Undefined symbols for architecture arm64:
"_OBJC_CLASS_$_XCElementSnapshot", referenced from:
l_OBJC_$_CATEGORY_XCElementSnapshot_$_FBIsVisible in XCUIElement+FBIsVisible.o
l_OBJC_$_CATEGORY_XCElementSnapshot_$_FBUID in XCUIElement+FBUID.o
l_OBJC_$_CATEGORY_XCElementSnapshot_$_WebDriverAttributes in XCUIElement+FBWebDriverAttributes.o
objc-class-ref in XCUIElement+FBWebDriverAttributes.o
objc-class-ref in XCUIElement+FBUtilities.o
l_OBJC_$_CATEGORY_XCElementSnapshot_$_FBAccessibility in XCUIElement+FBAccessibility.o
l_OBJC_$_CATEGORY_XCElementSnapshot_$_FBScrolling in XCUIElement+FBScrolling.o
...
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (