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Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff

Hi everyone, I’m in a very big trouble and I can’t understand where find a solution… I’m working with UE4.24 and I’m in this project since May. Today, with no advise, the project is bugged and I cannot open the editor and I have this issue, somebody could help me?

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff

UE4Editor_CoreUObject!TBaseStaticDelegateInstance<void cdecl(void)>::ExecuteIfSafe() [d:\build++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:854]
UE4Editor!TBaseMulticastDelegate<void>::Broadcast() [d:\build++ue4\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:1013] UE4Editor!FEngineLoop::AppPreExit() [d:\build++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:5371]
UE4Editor!FEngineLoop::Exit() [d:\build++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3881] UE4Editor!GuardedMain([d:\build++ue4\sync\engine\source\runtime\launch\private\launch.cpp:186]
UE4Editor!GuardedMainWrapper() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:263]
UE4Editor!scrt_common_main_seh() [d:\agent_work\2\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll