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UE4 noob

the mod was working fine before, i added a little to it (nothing i hadn’t added before, just with a different audio file) I cooked and uploaded, downloaded and now i get this error

LowLevelFatalError [File:F:\build\Extinction\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp] [Line: 2999]
ParticleModuleRequired /Game/PrimalEarth/Effects/Particles/Gameplay/HUD/P_WristHologram_activate.P_WristHologram_activate:ParticleModuleRequired_17: Serial size mismatch: Got 291, Expected 275

VERSION: 286.104
KERNELBASE.dll!UnknownFunction (0x00007ffa5528a388) + 0 bytes [UnknownFile:0]
ShooterGame.exe!FError::LowLevelFatal() (0x00007ff78a375c26) + 0 bytes [f:\build\extinction\engine\source\runtime\core\private\misc\outputdevice.cpp:354]
ShooterGame.exe!ULinkerLoad::Preload() (0x00007ff78a411374) + 115 bytes [f:\build\extinction\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2999]
ShooterGame.exe!FAsyncPackage::CreateExports() (0x00007ff78a3eb51b) + 0 bytes [f:\build\extinction\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:1056]
ShooterGame.exe!FAsyncPackage::Tick() (0x00007ff78a3e9bc2) + 8 bytes [f:\build\extinction\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:296]
ShooterGame.exe!ProcessAsyncLoading() (0x00007ff78a3eca18) + 24 bytes [f:\build\extinction\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:1580]
ShooterGame.exe!FlushAsyncLoading() (0x00007ff78a3ec742) + 17 bytes [f:\build\extinction\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:1433]
ShooterGame.exe!UPrimalGlobals::FinishLoadGameMedia() (0x00007ff78967e0f2) + 0 bytes [f:\build\extinction\projects\shootergame\source\shootergame\private\primalglobals.cpp:103]
ShooterGame.exe!FTimerManager::Tick() (0x00007ff78ae1adef) + 35 bytes [f:\build\extinction\engine\source\runtime\engine\private imermanager.cpp:1077]
ShooterGame.exe!UWorld::Tick() (0x00007ff78ac54267) + 0 bytes [f:\build\extinction\engine\source\runtime\engine\private\leveltick.cpp:1288]
ShooterGame.exe!UGameEngine::Tick() (0x00007ff78ab800c5) + 0 bytes [f:\build\extinction\engine\source\runtime\engine\private\gameengine.cpp:1170]
ShooterGame.exe!FEngineLoop::Tick() (0x00007ff789468a95) + 0 bytes [f:\build\extinction\engine\source\runtime\launch\private\launchengineloop.cpp:2421]
ShooterGame.exe!GuardedMain() (0x00007ff789462edc) + 0 bytes [f:\build\extinction\engine\source\runtime\launch\private\launch.cpp:140]
ShooterGame.exe!GuardedMainWrapper() (0x00007ff789469ffa) + 5 bytes [f:\build\extinction\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
ShooterGame.exe!WinMain() (0x00007ff78946a128) + 8 bytes [f:\build\extinction\engine\source\runtime\launch\private\windows\launchwindows.cpp:209]
ShooterGame.exe!__tmainCRTStartup() (0x00007ff78be5e1d1) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
KERNEL32.DLL!UnknownFunction (0x00007ffa58c83034) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffa58e71471) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffa58e71471) + 0 bytes [UnknownFile:0]

if anyone has any clue as to where i should look i’d be so grateful, Thank you!

Try verifying both your game, through Steam, and your ADK, through Epic launcher.