Error: Reserved block type name in provider block

Terraform
1

The block type name “locals” is reserved for use by Terraform in a future
version.

Code below;

locals {
backend_address_pool_name = “azurerm_virtual_network.MDSVnet.name-beap”
frontend_port_name = “azurerm_virtual_network.MDSVnet.name-feport”
frontend_ip_configuration_name = “azurerm_virtual_network.MDSVnet.name-feip”
http_setting_name = “azurerm_virtual_network.MDSVnet.name-be-htst”
listener_name = “azurerm_virtual_network.MDSVnet.name-httplstn”
request_routing_rule_name = “azurerm_virtual_network.MDSVnet.name-rqrt”
redirect_configuration_name = “azurerm_virtual_network.MDSVnet.name-rdrcfg”
}

resource “azurerm_application_gateway” “network” {
name = “MDS-appgateway”
resource_group_name = azurerm_resource_group.MDSAppgtw.name
location = azurerm_resource_group.MDSAppgtw.location