Can't establish VPN connection, VPN profile not verify certificate .p12.

Hello.
I am trying create VPN programmatically, because I am need enable and disable it from App but I have some problem when do it.
First when I am download file ( client.mobileconfig ) and then install to iPhone vpn works good but I can't control state of VPN.

I am was examine this file, using program "Apple Configurator 2" and create profile of vpn programmatically, but when I am want connect to VPN, I am saw this error ONLY first time then I am don't see any errors:

Connection 8: received failure notification

nwflowaddwriterequest [C8.1 (Ip&Port) failed channel-flow (satisfied (Path is satisfied), viable, interface: en0, ipv4, dns)] cannot accept write requests

nwwriterequest_report [C8] Send failed with error "Socket is not connected"

Connection 5: received failure notification
Connection 5: failed to connect 1:53, reason -1
Connection 5: encountered error(1:53)
Connection 4: received failure notification
Connection 4: failed to connect 1:53, reason -1
Connection 4: encountered error(1:53)
Connection 1: received failure notification
Connection 1: failed to connect 1:53, reason -1
Connection 1: encountered error(1:53)
Connection 2: received failure notification
Connection 2: failed to connect 1:53, reason -1
Connection 2: encountered error(1:53)
Connection 3: received failure notification
Connection 3: failed to connect 1:53, reason -1
Connection 3: encountered error(1:53)
Connection 6: received failure notification
Connection 6: failed to connect 1:53, reason -1
Connection 6: encountered error(1:53)

This Is My code:

Code Block 
 let vpnManager = NEVPNManager.shared()
   
  func initVPNTunnelProviderManager() {
    print("CALL LOAD TO PREFERENCES...")
    self.vpnManager.loadFromPreferences { (error) -> Void in
      if((error) != nil) {
        print("VPN Preferences error: 1 - \(error)")
      } else {
        let IKEv2Protocol = NEVPNProtocolIKEv2()
         
        IKEv2Protocol.authenticationMethod = .certificate
        IKEv2Protocol.serverAddress = self.vpnServerAddress
        IKEv2Protocol.remoteIdentifier = self.vpnRemoteIdentifier
        IKEv2Protocol.localIdentifier = self.vpnLocalIdentifier
        IKEv2Protocol.useExtendedAuthentication = false
        IKEv2Protocol.ikeSecurityAssociationParameters.encryptionAlgorithm = .algorithmAES256GCM
        IKEv2Protocol.ikeSecurityAssociationParameters.diffieHellmanGroup = .group20
        IKEv2Protocol.ikeSecurityAssociationParameters.integrityAlgorithm = .SHA512
        IKEv2Protocol.ikeSecurityAssociationParameters.lifetimeMinutes = 1440
        IKEv2Protocol.childSecurityAssociationParameters.encryptionAlgorithm = .algorithmAES256GCM
        IKEv2Protocol.childSecurityAssociationParameters.diffieHellmanGroup = .group20
        IKEv2Protocol.childSecurityAssociationParameters.integrityAlgorithm = .SHA512
        IKEv2Protocol.childSecurityAssociationParameters.lifetimeMinutes = 1440
        IKEv2Protocol.deadPeerDetectionRate = .medium
        IKEv2Protocol.disableRedirect = true
        IKEv2Protocol.disableMOBIKE = false
        IKEv2Protocol.enableRevocationCheck = false
        IKEv2Protocol.enablePFS = true
        IKEv2Protocol.useConfigurationAttributeInternalIPSubnet = false
        IKEv2Protocol.serverCertificateIssuerCommonName = self.vpnServerCertificateIssuerCommonName
        IKEv2Protocol.disconnectOnSleep = false
        IKEv2Protocol.certificateType = .ECDSA384
        IKEv2Protocol.identityDataPassword = self.p12Password
        IKEv2Protocol.identityData = self.dataFromFile() as Data
        self.vpnManager.protocolConfiguration = IKEv2Protocol
        self.vpnManager.localizedDescription = "Safe Login Configuration"
        self.vpnManager.isEnabled = true
        self.vpnManager.isOnDemandEnabled = true
        //Set rules
        var rules = [NEOnDemandRule]()
        let rule = NEOnDemandRuleConnect()
        rule.interfaceTypeMatch = .any
        rules.append(rule)
        //SAVE TO PREFERENCES...
        self.vpnManager.saveToPreferences(...)
      }
    } //END OF .loadFromPreferences //
  }
   
  func dataFromFile() -> NSData{
    let rootCertPath = Bundle.main.path(forResource: "client", ofType: "p12")
    let certficiateData = NSData(contentsOfFile: rootCertPath!)
    return certficiateData!
  }

If I am change this line of code:

Code Block 
IKEv2Protocol.identityDataPassword = self.p12Password
IKEv2Protocol.identityData = self.dataFromFile() as Data

on this verifying method:

Code Block 
IKEv2Protocol.identityReference = self.identityReference()
private func identityReference() -> Data {
    let rootCertPath = Bundle.main.path(forResource: "client", ofType: "p12")
    let certficiateData = NSData(contentsOfFile: rootCertPath!)
     
    var importResult: CFArray? = nil
    let err = SecPKCS12Import(certficiateData! as NSData, [
      kSecImportExportPassphrase: p12Password
    ] as NSDictionary, &importResult)
    guard err == errSecSuccess else { fatalError() }
    let importArray = importResult! as! [[String:Any]]
    let identity = importArray[0][kSecImportItemIdentity as String]! as! SecIdentity
    var copyResult: CFTypeRef? = nil
    let err2 = SecItemCopyMatching([
      kSecValueRef: identity,
      kSecReturnPersistentRef: true
    ] as NSDictionary, &copyResult)
    guard err2 == errSecSuccess else { fatalError() } //  Here I am see fatal error here
    return copyResult! as! Data
  }

I am obtain fatal error and I am don't understand where I did mistake.

What is my problem? I can't find information about this mistakes.
If need I am attach "client.mobileconfig" file.

Code Block swift
var copyResult: CFTypeRef? = nil
let err2 = SecItemCopyMatching([
  kSecValueRef: identity,
  kSecReturnPersistentRef: true
] as NSDictionary, &copyResult)
guard err2 == errSecSuccess else { fatalError() } //  Here I am see fatal error here