I keep on having an error with my code and I have no clue how to fix it

Development Programming & Scripting
1

// Fill out your copyright notice in the Description page of Project Settings.

#include “Stealth.h”
#include “APatrolIController.h”
#include “AIPatrol.h”
#include “AIPatrolPoints.h”
#include “BehaviorTree/BlackboardComponent.h”
#include “BehaviorTree/BehaviorTreeComponent.h”
#include “BehaviorTree/BehaviorTree.h”

AAPatrolIController::AAPatrolIController()
{

BehaviorComp = CreateDefaultSubobject<UBehaviorTreeComponent>(TEXT("BehaviorComp"));
BlackboardComp = CreateDefaultSubobject<UBlackboardComponent>(TEXT("BlackboardComp"));

PlayerKey = "Target";
LocationToGoKey = "LocationToGoKey";

}

void AAPatrolIController::Possess(APawn * Pawn)
{

Super::Possess(Pawn);

AAIPatrol* AICharacter = Cast<AAIPatrol>(Pawn);

if (AICharacter)
{
	if (AICharacter->BehaviorTree->BlackboardAsset)
	{
		BlackboardComp->InitializeBlackboard(*(AICharacter->BehaviorTree->BlackboardAsset));
	}

	UGameplayStatics:GetAllActorsOfClass(GetWorld(), AAIPatrolPoints::StaticClass(), AIPatrolPoints);

	BehaviorComp->StartTree(*AICharacter->BehaviorTree);

}

}
I have done that code which I found from the tutorial Unreal Engine C++ Tutorial - Stealth Game AI - YouTube around 21:13 however I keep on having an issue with:
UGameplayStatics:GetAllActorsOfClass(GetWorld(), AAIPatrolPoints::StaticClass(), AIPatrolPoints);
as I have either have the problem identifier GetAllActorsOfClass is undefined with one colon or UGameplayStatics as it needs a class or namespace after it with two semi colon. So can someone tell me how to recitify it please.

2

It should be two colons. If it is saying something like “UGameplayStatics is not a class or namespace name” then it means the compiler hasn’t seen that name before in this file – you may have forgotten to include the header for that class (GameplayStatics.h according to the docs).