How to properly pass TArray variable's value via RPC function's array in C++?

Development Programming & Scripting Multiplayer & Networking
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The RPC function literally does nothing for testing purpose but my clients stop working/moving, rotating etc…/ except server. Everything is working fine if i remove TArray parameter from RPC functions. Also there is no compiler error. How to properly pass TArray variable via RPC function’s parameter? What am i doing wrong? Please help me, almost stuck on this whole three days.

Here is the Header file declaration:

UFUNCTION(Reliable, Server, WithValidation)
void Cone_Server(const TArray<FVector>& vertices);
void Cone_Server_Implementation(const TArray<FVector>& vertices);
bool Cone_Server_Validate(const TArray<FVector>& vertices);
    
UFUNCTION(Reliable, NetMulticast)
void Cone_Multicast(const TArray<FVector>& vertices);

Here is the CPP file definition and call:

void AMafiaCharacter::Tick(float DeltaSeconds)
{
    Super::Tick(DeltaSeconds);

    TArray<FVector> ConeVertices;
    //Some actions on ConeVertices;
 
    if (HasAuthority() && IsLocallyControlled())
    {
        Cone_Multicast(ConeVertices);
    }
    else
    {
        Cone_Server(ConeVertices);
    }  
}

void AMafiaCharacter::Cone_Server_Implementation(const TArray<FVector>& vertices)
{
    Cone_Multicast(vertices);
}
 
bool AMafiaCharacter::Cone_Server_Validate(const TArray<FVector>& vertices)
{
    return  true;
}
 
void AMafiaCharacter::Cone_Multicast_Implementation(const TArray<FVector>& vertices)
{
 
}