When I start my App on iOS 14 Simulators, the App crashes with the following error and I don't know what to do. With iOS 15 devices there is no problem.
It seems that the problem is there since I added OneSignal with Extension and Pod.
dyld: Symbol not found: _vfork Referenced from: /Users/samderksen/Library/Developer/CoreSimulator/Devices/3C668444-3D2B-4C1A-9CC5-DB7949CB256D/data/Containers/Bundle/Application/B580FA0C-49A1-4283-8386-4554FD311A31/VOH-App.app/Frameworks/libclang_rt.tsan_iossim_dynamic.dylib Expected in: /usr/lib/libSystem.B.dylib
dyld: launch, loading dependent libraries DYLD_SHARED_CACHE_DIR=/Users/samderksen/Library/Developer/CoreSimulator/Caches/dyld/21A559/com.apple.CoreSimulator.SimRuntime.iOS-14-4.18D46 DYLD_ROOT_PATH=/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 14.4.simruntime/Contents/Resources/RuntimeRoot DYLD_LIBRARY_PATH=/Users/samderksen/Library/Developer/Xcode/DerivedData/VOH-App-gzxswcyspowktogquxwgnliewlnn/Build/Products/Debug-iphonesimulator:/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 14.4.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=@executable_path/Frameworks/libclang_rt.tsan_iossim_dynamic.dylib:/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 14.4.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libBacktraceRecording.dylib:/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 14.4.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libMainThreadChecker.dylib:/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 14.4.simruntime/Contents/Res
I encountered the same error when compiling an app for 13.6.
I disabled the thread sanitizer as per this : https://github.com/firebase/firebase-ios-sdk/issues/9061, and it worked properly.