trying to create a pcap file but getting error

[Ndilipunye Isak]

[  0%] Building CXX object scratch/CMakeFiles/scratch_mile.dir/mile.cc.o
/home/isak/WLT/ns-allinone-3.36.1/ns-3.36.1/scratch/mile.cc: In function ‘int main(int, char**)’:
/home/isak/WLT/ns-allinone-3.36.1/ns-3.36.1/scratch/mile.cc:115:10: error: ‘tracing’ was not declared in this scope
  115 |      if (tracing == true) {
      |          ^~~~~~~
/home/isak/WLT/ns-allinone-3.36.1/ns-3.36.1/scratch/mile.cc:118:14: error: ‘class ns3::MobilityHelper’ has no member named ‘EnablePcapAll’; did you mean ‘EnableAsciiAll’?
  118 |         isak.EnablePcapAll("isak2");
      |              ^~~~~~~~~~~~~
      |              EnableAsciiAll

[Ndilipunye Isak]

here is my  code

#include "ns3/core-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/network-module.h"
#include "ns3/applications-module.h"
#include "ns3/wifi-module.h"
#include "ns3/mobility-module.h"
#include "ns3/csma-module.h"
#include "ns3/internet-module.h"
#include "ns3/netanim-module.h"
#include "ns3/ptr.h"
#include "ns3/packet.h"
#include "ns3/header.h"
#include <iostream>
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/network-module.h"
#include "ns3/internet-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/wifi-module.h"
#include "ns3/pcap-file.h"
                                 
using namespace ns3;

int
main (int argc, char *argv[])
{

 NodeContainer routers;  
  routers.Create (2);        // this is a container for my two routers          

 NodeContainer pc;
   pc.Create (3);               // this is a container for my three pc          

 NodeContainer servers;
  pc.Add (routers.Get (0));        //connect the two node containers
 servers.Create (2);          // this is a container for my two servers          

 PointToPointHelper routerconnection;  // router connection serial cable
  CsmaHelper manyports;                   // the switch for the servers
  CsmaHelper manyport;                        // the switch for the pcs
 
NetDeviceContainer routerinterface;     // the container routerinterface
NetDeviceContainer serverinterface;     // the container serverinterface
NetDeviceContainer pcinterface;         // the container pcrinterface

routerinterface = routerconnection.Install (routers); // install interface on the nodes
serverinterface = manyports.Install (pc); // install interface on the nodes
pcinterface = manyport.Install (servers); // install interface on the nodes


InternetStackHelper mystack;             //create internet stack TCP
mystack.Install (routers.Get(1));
mystack.Install (servers);
mystack.Install (pc);


Ipv4AddressHelper wanadresses;
wanadresses.SetBase ("192.170.10.0" , "255.255.255.0"); // assign ip adresses
Ipv4AddressHelper lanadresses;
lanadresses.SetBase ("10.170.0.0" , "255.255.255.0");
Ipv4AddressHelper maxpc;
maxpc.SetBase ("11.170.0.0" , "255.255.255.0");

Ipv4InterfaceContainer mywan = wanadresses.Assign (routerinterface); //puting ip address to the interfaces
Ipv4InterfaceContainer mylan = lanadresses.Assign (pcinterface);
Ipv4InterfaceContainer mypc = maxpc.Assign (serverinterface);

Ipv4GlobalRoutingHelper :: PopulateRoutingTables(); // enble routing protocol


UdpEchoServerHelper echoServer (170); // applicatio server
ApplicationContainer serverApps = echoServer.Install (routers.Get(0));
serverApps = echoServer.Install (routers.Get(1));
serverApps.Start (Seconds (1.0));
serverApps.Stop (Seconds (10.0));


UdpEchoClientHelper echoClient (mywan.GetAddress (1), 170);
echoClient.SetAttribute ("MaxPackets", UintegerValue (1));
echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));
echoClient.SetAttribute ("PacketSize", UintegerValue (1024));

ApplicationContainer clientApps = echoClient.Install (pc.Get(0)); // pc client
clientApps = echoClient.Install (pc.Get(1));
clientApps = echoClient.Install (pc.Get(2));
clientApps.Start (Seconds (2.0));
clientApps.Stop (Seconds (10.0));

ApplicationContainer clientApp = echoClient.Install (servers.Get (0)); //servers client
clientApp = echoClient.Install (servers.Get (1));
clientApp.Start (Seconds (2.0));
clientApp.Stop (Seconds (10.0));

MobilityHelper isak;                      // the mobility
isak.SetPositionAllocator ("ns3::GridPositionAllocator",
"MinX", DoubleValue (5), "MinY", DoubleValue (10),
"DeltaX", DoubleValue (1), "DeltaY", DoubleValue (1));
isak.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
isak.Install (routers);
isak.Install (pc);
isak.Install(servers);

AnimationInterface anim("shisak.xml"); // output
anim.SetConstantPosition(routers.Get(0), 1.0, 2.0); // coordinates of two routers
anim.SetConstantPosition(routers.Get(1), 3.0, 4.0);

anim.SetConstantPosition(pc.Get(0), 5.0, 6.0);// coordinates of three devices
anim.SetConstantPosition(pc.Get(1), 7.0, 8.0);
anim.SetConstantPosition(pc.Get(2), 9.0, 10.0);

anim.SetConstantPosition(servers.Get(0), 11.0, 12.0); // coordinates of two servers
anim.SetConstantPosition(servers.Get(1), 13.0, 14.0);

     if (tracing == true) {
        AsciiTraceHelper ascii;
        isak.EnableAsciiAll(ascii.CreateFileStream("isak4.tr"));
        isak.EnablePcapAll("isak2");
    }
 
 //AsciiTraceHelper ascii;
 //isak.EnableAsciiAll(ascii.CreateFileStream("isak.tr"));
 
 //isak.EnablePcapAll("isaks");
   


Simulator::Run ();
  Simulator::Destroy ();
  return 0;
}