我正在尝试练习“ Mastering Xamarin.Forms”第三版中的练习。我已按照书中的说明通过门户添加功能应用程序。

run.csx文件如下：

#r "Newtonsoft.Json"
#r "microsoft.WindowsAzure.Storage"
using System.Net;
using microsoft.AspNetCore.Mvc;
using microsoft.Extensions.Primitives;
using microsoft.WindowsAzure.Storage;
using microsoft.WindowsAzure.Storage.Table;
using Newtonsoft.Json;

public static async Task<IactionResult> Run(HttpRequest req,Newtonsoft.Json.Linq.JArray entryTableInput,IAsyncCollector<Entry> entryTableOutput,ILogger log)
{
    log.LogInformation(req.Method);
    if (req.Method == "GET")
    {
        return (actionResult) new OkObjectResult(entryTableInput);
    }
    var requestBody = await new StreamReader(req.Body).ReadToEndAsync();
    var entry = JsonConvert.DeserializeObject<Entry>(requestBody);

    if (entry != null)
    {
                await entryTableOutput.AddAsync(entry);
        return (actionResult) new OkObjectResult(entry);
    }
    return new BadRequestObjectResult("Invalid entry request.");
}
public class Entry
{
    public string Id => Guid.NewGuid().ToString("n");
    public string Title { get; set; }
    public double Latitude { get; set; }
    public double Longitude { get; set; }
    public DateTime Date { get; set; }
    public int Rating { get; set; }
    public string Notes { get; set; }
    // Required for Table Storage entities
    public string PartitionKey => "ENTRY";
    public string RowKey => Id;
}

function.json：

{
  "bindings": [
    {
      "authLevel": "anonymous","name": "req","type": "httpTrigger","direction": "in"
    },{
      "name": "$return","type": "http","direction": "out"
    },{
      "type": "table","name": "entryTableOutput","tableName": "entry","connection": "AzureWebJobStorage","name": "entryTableInput","take": 50,"connection": "AzureWebJobsStorage","direction": "in"
    }
  ],"disabled": false
}

我正在使用Postman来测试请求。 GET和POST都返回500内部服务器错误。我不知道下一步该怎么做。