I have the same issue. The only way to fix it for now is to just close fortnite and launch a new session. The main issue is that I cant launch a memory calculation since its crashing before I can even start the memory calculation.
Here is the error I am getting, I can send more logs if I need to
Ensure condition failed: false [File:Z:\UEVFS\FortniteGame\Plugins\ValkyrieFortnite\Source\ValkyrieCommon\Private\ValkyrieBeaconClient.cpp] [Line: 2917]
AValkyrieBeaconClient::ServerSendGameFlowMessage_Implementation is being called on the client, this shouldn’t happen. See logs for more info.
Stack:
0x00007fffcac8097b UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc7777fb0 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc777c86c UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffd5f2b4ca UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffd611a715 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffd62c930e UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffc7777ed6 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc78c28b2 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc78a6cb5 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc612fa80 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc610f1e5 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc610c67f UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffd5bbe869 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffe7d19fca UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffe7d130c9 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffe7d19f99 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffe7d130c9 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffc60f948d UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc78c3729 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc78a87c4 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc776a2ec UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc7906773 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffc790bea7 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffe7d154eb UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffe7d17a00 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffc790c097 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007fffd7725c6e UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffd87dfad3 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffd90044d6 UnrealEditorFortnite-Engine-Win64-Shipping.dll!UnknownFunction
0x00007fffc5753f03 UnrealEditorFortnite-Common-Win64-Shipping.dll!UnknownFunction
0x00007ff6077a9de5 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff60779d53c UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff60779d5ca UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff60779f974 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff6077ab1f4 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff6077abcf2 UnrealEditorFortnite-Win64-Shipping.exe!UnknownFunction
0x00007ff995f4e8d7 KERNEL32.DLL!UnknownFunction
0x00007ff9973ac53c ntdll.dll!UnknownFunction