客户端未获得资源所有者流程的授权

Question

客户端未获得资源所有者授权，请检查客户端的AllowedGrantTypes失败：IdentityServer4.Validation.TokenRequestValidator[0]

{
    "ClientId": "client",
    "GrantType": "password",
    "Raw": {
      "client_id": "client",
      "client_secret": "***REDACTED***",
      "grant_type": "password"
    }
  }