TERRAFORM CRASH during plan index out of range

[roshanp85]

Hi All, I am getting terraform crash while planning the application gateway. I am specifically having this issue while planning for application gateway.

Could you please take a look at this and let me know if I am missing anything. Below are the versions I am using for this. I am storing the terraform state remotely in Storage blob container.
terraform {
required_version = "= 0.11.14"
}
provider "azurerm" {
version = "= 1.27.1"
}
provider "null" {
version = "= 2.1.1"
}
provider "template" {
version = "= 2.1.1"
}

PS D:> terraform plan --target=module.appgateway

Warning: azurerm_subnet.agw1subnet: "network_security_group_id": [DEPRECATED] Use the azurerm_subnet_network_security_group_association resource instead.

Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
Error: Error refreshing state: 1 error occurred:
* module.appgateway.azurerm_application_gateway.application_gateway: 1 error occurred:
* module.appgateway.azurerm_application_gateway.application_gateway: azurerm_application_gateway.application_gateway: unexpected EOF

panic: runtime error: index out of range
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe:
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: goroutine 127 [running]:
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: github.com/terraform-providers/terraform-provider-azurerm/azurerm.flattenApplicationGatewayAuthenticationCertificates(0xc0007c2b40, 0xc0006a6380, 0x5, 0x0, 0x0)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/teamcity-agent/work/5d79fe75d4460a2f/src/github.com/terraform-providers/terraform-provider-azurerm/azurerm/resource_arm_application_gateway.go:1276 +0x562
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: github.com/terraform-providers/terraform-provider-azurerm/azurerm.resourceArmApplicationGatewayRead(0xc0006a6380, 0x2e56180, 0xc000cdc000, 0xc0006a6380, 0x0)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/teamcity-agent/work/5d79fe75d4460a2f/src/github.com/terraform-providers/terraform-provider-azurerm/azurerm/resource_arm_application_gateway.go:1113 +0x631
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: github.com/terraform-providers/terraform-provider-azurerm/vendor/github.com/hashicorp/terraform/helper/schema.(*Resource).Refresh(0xc00008ae00, 0xc0004f9ef0, 0x2e56180, 0xc000cdc000, 0xc000080fd8, 0x4d4201, 0x2a12
fe0)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/teamcity-agent/work/5d79fe75d4460a2f/src/github.com/terraform-providers/terraform-provider-azurerm/vendor/github.com/hashicorp/terraform/helper/schema/resource.go:503 +0x179
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: github.com/terraform-providers/terraform-provider-azurerm/vendor/github.com/hashicorp/terraform/helper/schema.(*Provider).Refresh(0xc000950980, 0xc0004f9ea0, 0xc0004f9ef0, 0xc000721c00, 0x0, 0x320000)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/teamcity-agent/work/5d79fe75d4460a2f/src/github.com/terraform-providers/terraform-provider-azurerm/vendor/github.com/hashicorp/terraform/helper/schema/provider.go:324 +0x99
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: github.com/terraform-providers/terraform-provider-azurerm/vendor/github.com/hashicorp/terraform/plugin.(*ResourceProviderServer).Refresh(0xc000c16780, 0xc0001346b0, 0xc000134780, 0x0, 0x0)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/teamcity-agent/work/5d79fe75d4460a2f/src/github.com/terraform-providers/terraform-provider-azurerm/vendor/github.com/hashicorp/terraform/plugin/resource_provider.go:552 +0x55
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: reflect.Value.call(0xc0000fd7a0, 0xc0000077d0, 0x13, 0x2f17ce5, 0x4, 0xc00060ff18, 0x3, 0x3, 0xc00005c9c0, 0xc0001e6390, ...)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/goenv/versions/1.11.5/src/reflect/value.go:447 +0x45b
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: reflect.Value.Call(0xc0000fd7a0, 0xc0000077d0, 0x13, 0xc00060ff18, 0x3, 0x3, 0x1000200000000, 0xc0001e6380, 0x0)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/goenv/versions/1.11.5/src/reflect/value.go:308 +0xab
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: net/rpc.(*service).call(0xc000bca100, 0xc0004f8b90, 0xc000c3f7f8, 0xc000c3f810, 0xc000950e80, 0xc000c16d80, 0x2a12fa0, 0xc0001346b0, 0x16, 0x2a12fe0, ...)
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/goenv/versions/1.11.5/src/net/rpc/server.go:384 +0x155
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: created by net/rpc.(*Server).ServeCodec
2019-07-29T14:12:43.363-0400 [DEBUG] plugin.terraform-provider-azurerm_v1.27.1_x4.exe: /opt/goenv/versions/1.11.5/src/net/rpc/server.go:481 +0x485
2019/07/29 14:12:43 [ERROR] root.appgateway: eval: *terraform.EvalRefresh, err: azurerm_application_gateway.application_gateway: unexpected EOF
2019/07/29 14:12:43 [ERROR] root.appgateway: eval: *terraform.EvalSequence, err: azurerm_application_gateway.application_gateway: unexpected EOF
2019/07/29 14:12:43 [TRACE] [walkRefresh] Exiting eval tree: module.appgateway.azurerm_application_gateway.application_gateway
2019/07/29 14:12:43 [TRACE] dag/walk: upstream errored, not walking "provider.azurerm (close)"
2019/07/29 14:12:43 [TRACE] dag/walk: upstream errored, not walking "root"
2019-07-29T14:12:43.379-0400 [DEBUG] plugin: plugin process exited: path=D:\SVN\Release\Release\Terraform\PrimaryInsights.terraform\plugins\windows_amd64\terraform-provider-azurerm_v1.27.1_x4.exe
2019/07/29 14:12:43 [DEBUG] plugin: waiting for all plugin processes to complete...
2019-07-29T14:12:43.385-0400 [WARN ] plugin: error closing client during Kill: err="connection is shut down"
2019-07-29T14:12:43.387-0400 [DEBUG] plugin.terraform.exe: local-exec-provisioner (internal) 2019/07/29 14:12:43 [ERR] plugin: plugin server: accept tcp 127.0.0.1:10001: use of closed network connection
2019-07-29T14:12:43.387-0400 [DEBUG] plugin.terraform.exe: local-exec-provisioner (internal) 2019/07/29 14:12:43 [DEBUG] plugin: waiting for all plugin processes to complete...
2019-07-29T14:12:43.397-0400 [DEBUG] plugin: plugin process exited: path="C:\Program Files\Terraform\terraform.exe"

!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Terraform crashed! This is always indicative of a bug within Terraform.
A crash log has been placed at "crash.log" relative to your current
working directory. It would be immensely helpful if you could please
report the crash with Terraform1 so that we can fix this.

When reporting bugs, please include your terraform version. That
information is available on the first line of crash.log. You can also
get it by running 'terraform --version' on the command line.

!!!!!!!!!!!!!!!!!!!!!!!!!!! TERRAFORM CRASH !!!!!!!!!!!!!!!!!!!!!!!!!!!!

[roshanp85]

crash.log

[ghost]

This issue has been automatically migrated to hashicorp/terraform-provider-azurerm#3965 because it looks like an issue with that provider. If you believe this is not an issue with the provider, please reply to hashicorp/terraform-provider-azurerm#3965.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.