Hi all, please can i have some help with this error, heres my code:

Spoiler

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Rage;
using LSPD_First_Response.Mod.API;
using LSPD_First_Response.Mod.Callouts;
using LSPD_First_Response.Engine.Scripting.Entities;
using System.Drawing;

namespace British_Callouts.Callouts
{
    [CalloutInfo("Acid Attack", CalloutProbability.High)]
    public class AcidAttack : Callout
    {
        private Ped myPed;
        private Vehicle myVehicle;
        private Vector3 SpawnPoint;
        private Blip myPedBlip;
        private LHandle Pursuit;
        private bool PursuitCreated = false;
        private Ped Victim;
        private Blip SearchArea;

        public override bool OnBeforeCalloutDisplayed()
        {

            SpawnPoint = World.GetNextPositionOnStreet(Game.LocalPlayer.Character.Position.Around(250f));

            myPed = new Ped("g_m_m_chicold_01", SpawnPoint, 0f);
            Victim = new Ped("u_m_y_zombie_01", SpawnPoint, 0f);

            myVehicle = new Vehicle("FAGGIO2", SpawnPoint);

            if (!myPed.Exists()) return false;
            if (!myVehicle.Exists()) return false;
            if (!Victim.Exists()) return false;

            myPed.WarpIntoVehicle(myVehicle, -1);

            ShowCalloutAreaBlipBeforeAccepting(SpawnPoint, 30f);
            AddMinimumDistanceCheck(20f, SpawnPoint);

            SearchArea = new Blip(myPed.Position, 100f)

            CalloutMessage = "Acid Attack";
            CalloutPosition = SpawnPoint;

            Functions.PlayScannerAudioUsingPosition("WE_HAVE CRIME_ATTEMPTED_MURDER_IN_OR_ON_POSITION", SpawnPoint);

            return base.OnBeforeCalloutDisplayed();
        }
        public override bool OnCalloutAccepted()

        {

            myVehicle.IsPersistent = true;
            myPed.IsPersistent = true;
            myPed.BlockPermanentEvents = true;
            myPedBlip = myPed.AttachBlip();
            myPedBlip.IsFriendly = false;

            SearchArea = new Blip(myPed.Position, 100f)
            {
                Alpha = 0.5f,
                Color = Color.Yellow
            };

            Victim.IsPersistent = true;
            myPed.Tasks.CruiseWithVehicle(100f, VehicleDrivingFlags.None);
            return base.OnCalloutAccepted();
        }

        public override void Process()
        {

            base.Process();
            if (!PursuitCreated && Game.LocalPlayer.Character.DistanceTo(myPed.Position) < 5f)
            {
                Pursuit = Functions.CreatePursuit();
                Functions.AddPedToPursuit(Pursuit, myPed);
                Functions.SetPursuitIsActiveForPlayer(Pursuit, true);
                PursuitCreated = true;
            }
            if (PursuitCreated && !Functions.IsPursuitStillRunning(Pursuit))
            {
                End();
            }
        }

        public override void End()
        {
            base.End();
            if (myPed.Exists()) { myPed.Dismiss(); }
            if (myVehicle.Exists()) { myVehicle.Dismiss(); }
            if (myPedBlip.Exists()) { myPedBlip.Delete(); }
            if (SearchArea.Exists()) { SearchArea.Delete(); }
        }
    }
}

Im new to coding so i have no idea what this means!

Please post the actual error from your ragepluginhook.log

Also you should never create blips, spawn vehicles/peds, or do anything else visible to the player in OnBeforeCalloutDisplayed. All of that should be done in OnCalloutAccepted. The only things you should do in OnBeforeCalloutDisplayed are to check if it's OK to show the callout, and return false if it isn't. Otherwise, if the callout isn't accepted, then you'll have a bunch of stuff spawned in for a callout that doesn't actually occur. 

Thank you, but ive sorted it, weapon was spelt wrong, thanks anyway!