我的项目运行时遇到问题Xcode previews。一旦我尝试启动它，无论我尝试预览什么视图，都会收到以下错误。在物理设备或模拟器上运行应用程序效果很好。
linker command failed with exit code 1 (use -v to see invocation)
----------------------------------------
LinkDylibError: Failed to build CustomTextField.swift
Linking failed: linker command failed with exit code 1 (use -v to see invocation)
ld: warning: directory not found for option '-F/Applications/Xcode.app/Contents/SharedFrameworks-iphonesimulator'
Undefined symbols for architecture arm64:
"___llvm_profile_runtime", referenced from:
___llvm_profile_runtime_user in FBLPromises(PromisesObjC-dummy.o)
___llvm_profile_runtime_user in FBLPromises(FBLPromise.o)
___llvm_profile_runtime_user in FBLPromises(FBLPromise+All.o)
___llvm_profile_runtime_user in FBLPromises(FBLPromise+Always.o)
___llvm_profile_runtime_user in FBLPromises(FBLPromise+Any.o)
___llvm_profile_runtime_user in FBLPromises(FBLPromise+Async.o)
___llvm_profile_runtime_user in FBLPromises(FBLPromise+Catch.o)
...
(maybe you meant: ___llvm_profile_runtime_user)
ld: symbol(s) …