The request content was invalid and could not be deserialized

[bicisteadm]

When attempting to deploy aks-engine-azurestack ARM templates with Terraform, I encounter the error:
The request content was invalid and could not be deserialized.

 Error: creating Template Deployment "project-k8s-test-dc" (Resource Group "project-k8s-test-dc"): resources.DeploymentsClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="InvalidRequestContent" Message="The request content was invalid and could not be deserialized: 'Error converting value \"https://schema.management.azure.com/schemas/2019-04-01/deploymentParameters.json#\" to type 'Azure.Deployments.Core.Definitions.DeploymentParameterDefinition'. Path 'properties.parameters.$schema', line 1, position 130438.'."
│
│   with azurestack_template_deployment.project_k8s_test_dc,
│   on main.tf line 34, in resource "azurestack_template_deployment" "project_k8s_test_dc":
│   34: resource "azurestack_template_deployment" "project_k8s_test_dc" {

I generate the templates using:

aks-engine-azurestack generate --api-model project-test-dc-apimodel.json --client-id "" --client-secret "" --output-directory project-k8s-test-dc
If I deploy the templates using:

az deployment group validate --resource-group project-rg-k8s-test-dc --template-file azuredeploy.json --parameters azuredeploy.parameters.json
the deployment works fine.

Here is my Terraform code:

# We strongly recommend using the required_providers block to set the
# Azure Provider source and version being used
terraform {
  required_providers {
    azurestack = {
        source = "hashicorp/azurestack"
        version = "1.0.0"
    }
  }
}

# Configure the Microsoft Azure Stack Provider
provider "azurestack" {
  features {}

  # More information on the authentication methods supported by
  # the AzureStack Provider can be found here:
  # https://registry.terraform.io/providers/hashicorp/azurestack/latest/docs

  environment = "custom"

  metadata_host = "management.dc.azurestack.domain.com"
  # subscription_id   = "..."
  # client_id         = "..."
  # client_secret     = "..."
  tenant_id         = ""
}

resource "azurestack_resource_group" "project_rg_k8s_test_dc" {
  name     = "project-rg-k8s-test-dc"
  location = "dc"
}

resource "azurestack_template_deployment" "project_k8s_test_dc" {
  name                = "project-k8s-test-dc"
  resource_group_name = azurestack_resource_group.project_rg_k8s_test_dc.name

  template_body = file("aks-engine-apimodels/project-k8s-test-dc/azuredeploy.json")
  parameters_body = file("aks-engine-apimodels/project-k8s-test-dc/azuredeploy.parameters.json")

  deployment_mode = "Incremental"
}

Other actions, such as creating a resource group (RG), work without any issues.