Assertion failed: !PhysicalMaterialTask.IsValid() [\Engine\Source\Runtime\Landscape\Private\LandscapeEdit.cpp] [Line: 1867]
ULandscapeComponent::UpdatePhysicalMaterialTasks() LandscapeEdit.cpp:1868
ALandscapeProxy::UpdatePhysicalMaterialTasks(bool) Landscape.cpp:5865
ULandscapeSubsystem::Tick(float) LandscapeSubsystem.cpp:333
FTickableGameObject::TickObjects(UWorld *,int,bool,float) Tickable.cpp:150
UWorld::Tick(ELevelTick,float) LevelTick.cpp:1584
UEditorEngine::Tick(float,bool) EditorEngine.cpp:1713
UUnrealEdEngine::Tick(float,bool) UnrealEdEngine.cpp:528
ULyraEditorEngine::Tick(float,bool) LyraEditorEngine.cpp:64
FEngineLoop::Tick() LaunchEngineLoop.cpp:5819