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When i try to upload i GIF File i get following exception:
System.UriFormatException: Invalid URI: The uri string is too long

A System.Exception exception is thrown when I call imgur.UploadImageAnonymous
Here is error message:
System.Exception: ' Error: Invalid URL ()
Request: /3/upload
Verb: POST '

Here is my code:

Imgur imgur = new Imgur("-----------");

private void fooBar(Stream stream)
{
    FileStream fs = File.OpenRead("test.bmp");
    
    Stream stream = Stream.Null;
    fs.CopyTo(stream);
    
    new Task(async () =>
    {
        ImgurImage img = await imgur.UploadImageAnonymous(stream, "Example", "Example Image", "Example Description"); // This is the line the exception throws
    }).Start();
}

I try the memorystream example with png, jpg and mp4, but i always get the ResponseException: "Error: We don't support that file type!"

No clue what i am doing wrong ^^