Xcode dialog box with message "Unable to lookup in current state: Shutdown"

I've never had this error before. When I try to run an iOS project in Xcode with a simulator, I get this message from XCode: "Unable to lookup in current state: Shutdown", and a button that says "Details", and a button that says"OK".

When I quit simulator and try to run my project again, the same thing happens.

When I click details it says "iPhone10,4 for device_model. The simulator is an iPhone 8 simulator.

Here is what the whole thing says:

(I don't know why some of the text has such a large font and is in bold.)

Details

Unable to lookup in current state: Shutdown Domain: com.apple.CoreSimulator.SimError Code: 405 User Info: {     DVTErrorCreationDateKey = "2022-04-16 23:02:18 +0000";     IDERunOperationFailingWorker = IDELaunchiPhoneSimulatorLauncher; }

Analytics Event: com.apple.dt.IDERunOperationWorkerFinished : {     "device_model" = "iPhone10,4";     "device_osBuild" = "15.4 (19E240)";     "device_platform" = "com.apple.platform.iphonesimulator";     "launchSession_schemeCommand" = Run;     "launchSession_state" = 1;     "launchSession_targetArch" = "x86_64";     "operation_duration_ms" = 22;     "operation_errorCode" = 405;     "operation_errorDomain" = "com.apple.CoreSimulator.SimError";     "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" = "5.6";     "param_runnable_type" = 2;     "param_testing_launchedForTesting" = 0;     "param_testing_suppressSimulatorApp" = 0;     "param_testing_usingCLI" = 0;     "sdk_canonicalName" = "iphonesimulator15.4";     "sdk_osVersion" = "15.4";     "sdk_variant" = iphonesimulator; }

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System Information

macOS Version 12.3.1 (Build 21E258) Xcode 13.3.1 (20103) (Build 13E500a) Timestamp: 2022-04-16T18:02:18-05:00

Xcode dialog box with message "Unable to lookup in current state: Shutdown"
 
 
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