My app installs fine on the simulator and I can attach the process after opening it manually but it won’t run from the debug play button without throwing the error below.
I’ve tried all the tricks I know (deleting the derived data and re-compiling, commenting out some code here and there, exhaustive searches for keywords).
Any help or insight would be greatly appreciated.
Details
Application launch for '------' did not return a valid pid nor a launch error.
Domain: NSPOSIXErrorDomain
Code: 3
Failure Reason: No such process
User Info: {
IDERunOperationFailingWorker = IDELaunchiPhoneSimulatorLauncher;
}
--
Analytics Event: com.apple.dt.IDERunOperationWorkerFinished : {
"device_model" = "iPhone14,2";
"device_osBuild" = "15.0 (19A339)";
"device_platform" = "com.apple.platform.iphonesimulator";
"launchSession_schemeCommand" = Run;
"launchSession_state" = 1;
"launchSession_targetArch" = "x86_64";
"operation_duration_ms" = 845;
"operation_errorCode" = 3;
"operation_errorDomain" = NSPOSIXErrorDomain;
"operation_errorWorker" = IDELaunchiPhoneSimulatorLauncher;
"operation_name" = IDERunOperationWorkerGroup;
"param_consoleMode" = 0;
"param_debugger_attachToExtensions" = 0;
"param_debugger_attachToXPC" = 1;
"param_debugger_type" = 3;
"param_destination_isProxy" = 0;
"param_destination_platform" = "com.apple.platform.iphonesimulator";
"param_diag_MainThreadChecker_stopOnIssue" = 0;
"param_diag_MallocStackLogging_enableDuringAttach" = 0;
"param_diag_MallocStackLogging_enableForXPC" = 1;
"param_diag_allowLocationSimulation" = 1;
"param_diag_gpu_frameCapture_enable" = 0;
"param_diag_gpu_shaderValidation_enable" = 0;
"param_diag_gpu_validation_enable" = 0;
"param_diag_memoryGraphOnResourceException" = 0;
"param_diag_queueDebugging_enable" = 1;
"param_diag_runtimeProfile_generate" = 0;
"param_diag_sanitizer_asan_enable" = 0;
"param_diag_sanitizer_tsan_enable" = 0;
"param_diag_sanitizer_tsan_stopOnIssue" = 0;
"param_diag_sanitizer_ubsan_stopOnIssue" = 0;
"param_diag_showNonLocalizedStrings" = 0;
"param_diag_viewDebugging_enabled" = 1;
"param_diag_viewDebugging_insertDylibOnLaunch" = 1;
"param_install_style" = 0;
"param_launcher_UID" = 2;
"param_launcher_allowDeviceSensorReplayData" = 0;
"param_launcher_kind" = 0;
"param_launcher_style" = 0;
"param_launcher_substyle" = 0;
"param_runnable_appExtensionHostRunMode" = 0;
"param_runnable_productType" = "com.apple.product-type.application";
"param_runnable_swiftVersion" = "5.5.1";
"param_runnable_type" = 2;
"param_testing_launchedForTesting" = 0;
"param_testing_suppressSimulatorApp" = 0;
"param_testing_usingCLI" = 0;
"sdk_canonicalName" = "iphonesimulator15.0";
"sdk_osVersion" = "15.0";
"sdk_variant" = iphonesimulator;
}
--
System Information
macOS Version 11.6.1 (Build 20G224)
Xcode 13.1 (19466) (Build 13A1030d)
Timestamp: 2021-11-18T16:14:15-07:00
12
Answers
Ok turns out this mystery no-name Environment Variable was checked in the scheme. I unchecked it and it worked.
For me the solution was to change the Mach-O Type to bundle, then run the app again (same error) and change it back to Executable again.
In my case, I was trying to run unit test and similar error shows up after lunching app on the simulator.
What worked for me is that I didn’t notice the compiler error while building the unit test target. After fixing the test target build issue, app runs fine again. So, make sure the project is building without any error.
If your error started suddenly, just think of the action you performed earlier that might have caused this.
I had added libc++.tbd library in incorrect xcode/simulator location. Removing that fixed my issue
I tried changing the
Mach-Otype (which was not set) but it did not help.Restarting the simulator solved it (it was open before the Xcode was opened).
Faced the same problem. The problem was that the simulator was launched before Xcode.
Solution: Just close the simulator and build the project again
There seem to be multiple causes of this error. I’m running on an M1 Max / macOS Monterey. I tried some of the above solutions but found that they were either not applicable or had no effect. In the end, the answer (for my config) was here — install Rosetta. This was also what Xcode had been prompting me to do at every launch. I am running an app that uses Cocapods.
I experienced a similar issue and solved it by running $
flutter clean && flutter run. The Xcode workspace just needed clearing.Just do simple clean
Cmd + shift + k
I fixed this issue by removing
arm64from the Excluded Architectures in the Build Settings:In my case, even if I wasn’t running it under Rosetta, I had to install it. To do that, run this script:
or this if you want to skip the license agreement:
I also want to run the app in emulator. Changing the scheme’s Build Configuration to Debug solved my issue.