NEVPNManager not working with iOS 14 beta

NEVPNManager stop working with iOS 14 beta. It is trying to connect with VPN and disconnect immediately (I am seeing no error here also). It is working fine till iOS 13.6. I could not able to find any solution why it beehaving like that in iOS 14. Any help will be appriciated.

 public func connectIKEv2(config: Configuration,ssidArr: [String], onError: @escaping (String)->Void) {

        let p = NEVPNProtocolIKEv2()
        if config.pskEnabled {
  p.authenticationMethod = NEVPNIKEAuthenticationMethod.certificate
        } else {
            p.authenticationMethod = NEVPNIKEAuthenticationMethod.none
        }
        p.serverAddress = config.server
        p.disconnectOnSleep = false
        p.username = config.account
        p.passwordReference = config.getPasswordRef()
        p.sharedSecretReference = config.getPSKRef()
    p.useExtendedAuthentication = true
        p.remoteIdentifier = config.server
        p.localIdentifier = config.account

        let disconnectRule= NEOnDemandRuleDisconnect()
disconnectRule.ssidMatch = ssidArr

        let connectRule = NEOnDemandRuleConnect()
connectRule.interfaceTypeMatch = .any

        loadProfile { _ in

            self.manager.protocolConfiguration =
            if config.onDemand {
                self.manager.onDemandRules [disconnectRule,connectRule]
                self.manager.isOnDemandEnabled = true
            }

            self.manager.isEnabled = true
            self.saveProfile { success in
                if !success {
                    onError("Unable to save vpn profile")
                    return
                }

                self.loadProfile() { success in
                    if !success {
                        onError("Unable to load profile")
return}

                    let result = self.startVPNTunnel()

                    if !result {
                        onError("Can't connect")
                    }

                }
            }

        }

    }