我正在尝试创建一个已经部署到Azure的应用程序注册的Application ID URI，并使用azapi作为应用程序ID URI将是应用程序自己的application_id（即api://[app_id]）。所以我试图通过azapi来实现这一点。
但是，当我运行terraform init -upgrade时，我得到以下错误：

│ Error: Failed to query available provider packages
│
│ Could not retrieve the list of available versions for provider hashicorp/azapi: provider registry registry.terraform.io does not have a provider  
│ named registry.terraform.io/hashicorp/azapi
│
│ Did you intend to use azure/azapi? If so, you must specify that source address in each module which requires that provider. To see which modules  
│ are currently depending on hashicorp/azapi, run the following command:
│     terraform providers

我的provider.tf文件如下：

terraform {
  required_providers {
  azapi = {
    source = "Azure/azapi"
  }
  azuread = {
    source = "hashicorp/azuread"
  }
  azurerm = {
    source = "hashicorp/azurerm"
  }
}
backend "azurerm" {
  #..... #necessary info
  }
}

provider "azuread" {
  tenant_id       = "tenant_id"
}

provider "azapi" {
  subscription_id = "subscription_id"
  tenant_id       = "tenant_id"
}

和main.tf如下（其中app_reg已经定义）：

resource "azapi_update_resource" "update_app_reg" {
type = "Microsoft.Web/sites@2022-03-01"
name = "app-reg"
parent_id = azuread_service_principal.app_reg_service_principal.object_id

# Update Application ID URI
body = jsonencode({
"properties" = {
  "identifierUris" = [
    "api://${azuread_application.app_reg.application_id}"
    ]
  }
})

depends_on = [azuread_application.app_reg]
}

当我删除resource "azapi_update_resource" .........时，terraform init -upgrade成功运行。然而，当我离开它的定义，因为它是，我得到上面的错误。
我已经定义了提供者，我不确定我做错了什么。任何帮助将不胜感激。
PS：我已经检查了this post，微软关于这个和hashicorp documentation about this的文档，但没有什么帮助...