Assertion failed on opening a project

I am having similar trouble to UE-51726.
Everytime I try to open a project, this error happens.
I need to get this project back, I have no clue what to do.

Error log attached;


LoginId:2c852d7546b784df0e0a899a6187be01
EpicAccountId:495842c64e194a78bd14e6ce4e8db5ae

Assertion failed: false [File:D:\Build++UE4+Release-4.18+Compile\Sync\Engine\Source\Editor\KismetCompiler\Private\KismetCompilerVMBackend.cpp] [Line: 1216]

UE4Editor_Core!FDebug::AssertFailed() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:414]
UE4Editor_KismetCompiler!FScriptBuilderBase::EmitFunctionCall() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\kismetcompiler\private\kismetcompilervmbackend.cpp:1216]
UE4Editor_KismetCompiler!FScriptBuilderBase::GenerateCodeForStatement() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\kismetcompiler\private\kismetcompilervmbackend.cpp:1966]
UE4Editor_KismetCompiler!FKismetCompilerVMBackend::ConstructFunction() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\kismetcompiler\private\kismetcompilervmbackend.cpp:2140]
UE4Editor_KismetCompiler!FKismetCompilerVMBackend::GenerateCodeFromClass() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\kismetcompiler\private\kismetcompilervmbackend.cpp:2090]
UE4Editor_KismetCompiler!FKismetCompilerContext::CompileFunctions() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\kismetcompiler\private\kismetcompiler.cpp:4032]
UE4Editor_Kismet!FBlueprintCompilationManagerImpl::FlushCompilationQueueImpl() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:876]
UE4Editor_Kismet!FBlueprintCompilationManager::FlushCompilationQueue() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\kismet\private\blueprintcompilationmanager.cpp:2102]
UE4Editor_Engine!UBlueprintGeneratedClass::ConditionalRecompileClass() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:259]
UE4Editor_CoreUObject!FScopedClassDependencyGather::~FScopedClassDependencyGather() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:376]
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4024]
UE4Editor_CoreUObject!FLinkerLoad::IndexToObject() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4241]
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3711]
UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2744]
UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2902]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1322]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2421]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2177]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2469]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2177]
UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1956]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1866]
UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:735]
UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:438]
UE4Editor_CoreUObject!GetPackageLinker() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linker.cpp:690]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1234]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2421]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2177]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2469]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2177]
UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1956]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1866]
UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:735]
UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:438]
UE4Editor_CoreUObject!GetPackageLinker() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linker.cpp:690]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1234]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2421]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2177]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2469]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2177]
UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1956]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1866]
UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:735]
UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:438]
UE4Editor_CoreUObject!GetPackageLinker() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\linker.cpp:690]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1234]
UE4Editor_CoreUObject!LoadPackage() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1430]
UE4Editor_UnrealEd!UEditorEngine::Map_Load() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\editorserver.cpp:2492]
UE4Editor_UnrealEd!UEditorEngine::HandleMapCommand() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\editorserver.cpp:5968]
UE4Editor_UnrealEd!UEditorEngine::Exec() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\editorserver.cpp:5445]
UE4Editor_UnrealEd!UUnrealEdEngine::Exec() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\unrealedsrv.cpp:672]
UE4Editor_UnrealEd!FEditorFileUtils::LoadMap() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\filehelpers.cpp:2229]
UE4Editor_UnrealEd!FEditorFileUtils::LoadDefaultMapAtStartup() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\filehelpers.cpp:3477]
UE4Editor_UnrealEd!FUnrealEdMisc::OnInit() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\unrealedmisc.cpp:348]
UE4Editor_UnrealEd!EditorInit() [d:\build++ue4+release-4.18+compile\sync\engine\source\editor\unrealed\private\unrealedglobals.cpp:97]
UE4Editor!GuardedMain() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\launch.cpp:150]
UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build++ue4+release-4.18+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
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