System.MissingFieldException using Dropbox.Api 4.3.1 on Xamarin.iOS

robertmiles3

 

I'm attempting a test file upload using...

 

using (var client = new DropboxClient("MY_GENERATED_ACCESS_TOKEN"))
using (var stream = new MemoryStream(Encoding.UTF8.GetBytes("some text")))
{
    var updated = await client.Files.UploadAsync(
        path: $"/Backup-{DateTime.Now.ToString("yyyy-MM-dd-HH.mm.ss.fff")}.json",
        mode: WriteMode.Overwrite.Instance,
        autorename: false,
        clientModified: null,
        mute: false,
        body: stream);
}

 

But, I'm getting a System.MissingFieldException...

 

System.MissingFieldException: Field 'Dropbox.Api.DropboxRequestHandler/<Dropbox.Api.Stone.ITransport.SendUploadRequestAsync>d__d`3<TRequest_REF, TResponse_REF, TError_REF>.<>4__this' not found.
  at Dropbox.Api.Files.Routes.FilesUserRoutes.UploadAsync (Dropbox.Api.Files.CommitInfo commitInfo, System.IO.Stream body) [0x00006] in <4ef505fca4004e3fa64095111cf70e73>:0 
  at Dropbox.Api.Files.Routes.FilesUserRoutes.UploadAsync (System.String path, Dropbox.Api.Files.WriteMode mode, System.Boolean autorename, System.Nullable`1[T] clientModified, System.Boolean mute, System.IO.Stream body) [0x0000d] in <4ef505fca4004e3fa64095111cf70e73>:0 
  at yomomma.Services.DataService+<BackupAsync>d__3.MoveNext () [0x0005a] in /Users/yomomma/Dropbox/dev/yomomma/yomomma.Shared/Services/DataService.cs:111 

I'm using a "Generated Access Token" that I've created on my developer portal. Any ideas as to what is going on here? It's not a helpful error message at all.

 

 

 

 

 

robertmiles3

I actually just got it working. I had to add the "Microsoft.Bcl.Async" package as well. I noticed some errors in the console saying that "Microsoft.Threading.Tasks" wasn't found. After I added this package, all is well.