I can't open my project by crashed!

Fatal error: [File:D:\Build++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp] [Line: 3755]
Default subobject ProjectileMovementComponent ParticleComp already exists for VR_Projectile /Script/VR_Prototype.Default__VR_Projectile.

0x00007ffcfb54a388 KERNELBASE.dll!UnknownFunction []
0x00007ffcc9b1cd1a UE4Editor-Core.dll!FWindowsErrorOutputDevice::Serialize() [d:\build++ue4\sync\engine\source\runtime\core\private\windows\windowserroroutputdevice.cpp:63]
0x00007ffcc98fa967 UE4Editor-Core.dll!FOutputDevice::LogfImpl() [d:\build++ue4\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:71]
0x00007ffcc9830df7 UE4Editor-Core.dll!FDebug::AssertFailed() [d:\build++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:417]
0x00007ffcd1ff4236 UE4Editor-CoreUObject.dll!FObjectInitializer::CreateDefaultSubobject() [d:\build++ue4\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:3755]
0x00007ffcd1f20a2d UE4Editor-CoreUObject.dll!UObject::CreateDefaultSubobject() [d:\build++ue4\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:107]
0x00007ffcb116710d UE4Editor-VR_Prototype-9244.dll!AVR_Projectile::AVR_Projectile() [c:\users\pc-23\documents\ysm\vr_prototype\source\vr_prototype\vr_projectile.cpp:34]
0x00007ffcd1d68973 UE4Editor-CoreUObject.dll!UClass::CreateDefaultObject() [d:\build++ue4\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:3019]
0x00007ffcd20320a8 UE4Editor-CoreUObject.dll!UObjectLoadAllCompiledInDefaultProperties() [d:\build++ue4\sync\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:793]
0x00007ffcd201819f UE4Editor-CoreUObject.dll!ProcessNewlyLoadedUObjects() [d:\build++ue4\sync\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:867]
0x00007ffcd1d6e977 UE4Editor-CoreUObject.dll!TBaseStaticDelegateInstance::ExecuteIfSafe() [d:\build++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:813]
0x00007ffcc973ca7e UE4Editor-Core.dll!TBaseMulticastDelegate::Broadcast() [d:\build++ue4\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:974]
0x00007ffcc98f9e66 UE4Editor-Core.dll!FModuleManager::LoadModuleWithFailureReason() [d:\build++ue4\sync\engine\source\runtime\core\private\modules\modulemanager.cpp:510]
0x00007ffcf1a2cfec UE4Editor-Projects.dll!FModuleDescriptor::LoadModulesForPhase() [d:\build++ue4\sync\engine\source\runtime\projects\private\moduledescriptor.cpp:593]
0x00007ffcf1a2d2d4 UE4Editor-Projects.dll!FProjectManager::LoadModulesForProject() [d:\build++ue4\sync\engine\source\runtime\projects\private\projectmanager.cpp:63]
0x00007ff7ea9c83a1 UE4Editor.exe!FEngineLoop::LoadStartupModules() [d:\build++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2897]
0x00007ff7ea9cdc6b UE4Editor.exe!FEngineLoop::PreInit() [d:\build++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2310]
0x00007ff7ea9c5783 UE4Editor.exe!GuardedMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\launch.cpp:135]
0x00007ff7ea9c59ea UE4Editor.exe!GuardedMainWrapper() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:145]
0x00007ff7ea9d48da UE4Editor.exe!WinMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:276]
0x00007ff7ea9d659a UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
0x00007ffcfdf43dc4 KERNEL32.DLL!UnknownFunction []
0x00007ffcff003691 ntdll.dll!UnknownFunction []

I can’t open my project bacause this crashed
I don’t understand what’s problem.
No compile error in VS2017
And my UnrealEngin version is 4.21.2
Help me! T_T