这是我的terraform模板的样子：

resource "azurerm_resource_group" "example" {
  name     = "myAppServiceRG"
  location = var.location
}

resource "azurerm_service_plan" "example" {
  name                = var.servicePlanName
  resource_group_name = azurerm_resource_group.example.name
  location            = azurerm_resource_group.example.location
  os_type             = "Linux"
  sku_name            = var.pricingTier
  worker_count        = var.nodesInWebFarm
}
resource "azurerm_linux_web_app" "example" {
  name                = var.appName
  resource_group_name = azurerm_resource_group.example.name
  location            = azurerm_service_plan.example.location
  service_plan_id     = azurerm_service_plan.example.id

  site_config {
    application_stack {
      docker_image     = var.dockerHubImage
      docker_image_tag = "latest"
    }
  }
}

和参数.tfvars文件：

location        = "West Europe"
servicePlanName = "someserviceplan"
nodesInWebFarm  = 2
pricingTier     = "P1v2"
appName         = "myuniquelinuxwebapplication"
dockerHubImage  = "DOCKER|mcr.microsoft.com/dotnet/samples:aspnetapp"

但是由于某些原因，当我尝试执行terraform apply -var-file .\parameters.tfvars时，我得到了这个错误：
错误：创建Linux Web应用程序：（站点名称“myuniquelinuxwebapplication”/资源组“myAppServiceRG”）：web.AppsClient#CreateOrUpdate:发送请求失败：StatusCode=400 --原始错误：Code=“BadRequest”Message=“参数LinuxFxVersion的值无效。”详细信息=[{“Message”：“参数LinuxFxVersion的值无效。"}，{“Code”：“BadRequest”}，{“ErrorEntity”：{“Code”：“BadRequest”，“ExtendedCode”：“01007”，“Message”：“参数LinuxFxVersion的值无效。"，“MessageTemplate”：“参数{0}的值无效。"，“Parameters”：[“LinuxFxVersion”]}}]
有谁知道为什么，以及如何改变这一点？