Packer centos 8 failed

Hello,

i tried to provision a centos 8, the install fails with the console error:

My son file
my builder:
“builders”:[
{

     "name":"{{ user `PACKER_BOX_NAME` }}",
     "vm_name":"{{ user `PACKER_BOX_NAME` }}",
     "disk_size":"{{user `vsphere_disk_size`}}",
     "type":"vsphere-iso",
     "disk_thin_provisioned":true,
     "disk_controller_type":"lsilogic-sas",
     "vcenter_server":"{{user `vsphere_host`}}",
     "username":"{{user `vsphere_username`}}",
     "password":"{{user `vsphere_password`}}",
     "insecure_connection":"true",
     "datacenter":"{{user `vsphere_datacenter`}}",
     "cluster":"{{user `vsphere_cluster`}}",
     "folder":"{{user `vsphere_folder`}}",
     "datastore":"{{user `vsphere_datastore`}}",
     "network_card":"vmxnet3",
     "network":"{{user `vsphere_network`}}",
     "convert_to_template":false,
     "RAM":2048,
     "CPUs":1,
     "iso_paths":[
        "{{user `vsphere_iso_url`}}",
        "{{user `vsphere_tools_iso_url`}}"
     ],
     "communicator":"ssh",
     "ssh_pty":"true",
     "guest_os_type":"rhel7_64Guest",
     "shutdown_command":"/sbin/shutdown -Ph now",
     "ssh_username":"root",
     "ssh_password":"",
     "ssh_wait_timeout":"60m",
     "boot_wait":"5s",
     "floppy_files":[
        "CentOS/centos-kickstart-7.0_clients.cfg"
     ],
     "boot_command":[
        "<tab>text biosdevname=0 net.ifnames=0 ipv6.disable=1 inset.text ks=hd:fd0:/centos-kickstart-8.0_clients.cfg<enter><wait>"
     ],
     "configuration_parameters":
     {
        "disk.EnableUUID":"TRUE"
     }
  }

],