It doesn't crash with development build package, only with shipping.
Crash call stack:
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000
0x00007fff408621f6 VCRUNTIME140.dll!UnknownFunction []
0x00007ff656d930c9 -Win64-Shipping.exe!FEIKSDKManager::Tick() [K:\UEProject\Plugins\EOSIntegrationKit\Source\EIKShared\Private\EOSSDKManager.cpp:576]
0x00007ff656d90a8d -Win64-Shipping.exe!TBaseRawMethodDelegateInstance<0,FEIKSDKManager,bool __cdecl(float),FDefaultDelegateUserPolicy>::Execute() [K:\UE_5.5\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:519]
0x00007ff653b7c7f0 -Win64-Shipping.exe!UE::Core::Private::Function::TFunctionRefCaller<`FFileCache::PushCompletedRequest'::`6'::<lambda_1>,void>::Call() []
0x00007ff653b8acb6 -Win64-Shipping.exe!FTSTicker::Tick() []
0x00007ff656afd912 -Win64-Shipping.exe!FEngineLoop::Tick() []
0x00007ff656b01fcc -Win64-Shipping.exe!GuardedMain() []
0x00007ff656b0204a -Win64-Shipping.exe!GuardedMainWrapper() []
0x00007ff656b02f1d -Win64-Shipping.exe!LaunchWindowsStartup() []
0x00007ff656b0aa94 -Win64-Shipping.exe!WinMain() []
0x00007ff659414cd2 -Win64-Shipping.exe!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
0x00007fff45ede8d7 KERNEL32.DLL!UnknownFunction []
It doesn't crash with development build package, only with shipping.
Crash call stack: