Sound and Emitter just only play on server

Development Audio
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1

Hi,all.
I’m working on a multiplayer game, and i want to spawn a emitter and a sound when weapon fire.
SpawnEmitterAttached and SpawnSoundAttached spawned instance can only be played and displayed on the server.
Here is my code:.

bool AWeaponBase::SimulateWeaponFire_Validate()
{
	return true;
}

void AWeaponBase::SimulateWeaponFire_Implementation()
{
	if (CurrentWeaponState != EWeaponState::Firing)
	{
		return;
	}

	if (MuzzleFX && MuzzlePSC == nullptr && MyPawn != nullptr)
	{
		MuzzlePSC = UGameplayStatics::SpawnEmitterAttached(MuzzleFX, WeaponMesh, MuzzleAttachPoint);
	}

	if (FireAnim)
	{
		PlayWeaponAnimation(FireAnim);
	}

	if (FireLoopSound && FireAC == nullptr)
	{
		FireAC = PlayWeaponSound(FireLoopSound);
	}


	if (FireCameraShake != nullptr)
	{
		SimulateFireShake();
	}
	if (FireForceFeedback != nullptr)
	{
		SimulateFireFeedback();
	}

}




UAudioComponent* AWeaponBase::PlayWeaponSound(USoundCue* Sound)
{
	UAudioComponent* AC = nullptr;
	if (Sound && MyPawn)
	{
		AC = UGameplayStatics::SpawnSoundAttached(Sound, this->GetRootComponent(), MuzzleAttachPoint);
		GEngine->AddOnScreenDebugMessage(-1, 3.0f, FColor::Yellow, FString::Printf(TEXT("Spawned")));
		if (Role != ROLE_Authority)
		{
			PlayWeaponSound_Server(Sound);
		}
	}
	return AC;
}

bool AWeaponBase::PlayWeaponSound_Server_Validate(USoundCue* Sound)
{
	return true;
}

void AWeaponBase::PlayWeaponSound_Server_Implementation(USoundCue* Sound)
{
	UGameplayStatics::SpawnSoundAttached(Sound, MyPawn->GetRootComponent());

}

Can anyone help me?Plz.