Server Error 405 - HTTP verb used to access this page is not allowed

[pmd23]

What header do i need to include while uploading I am getting an error for header

 CrossFileUploader.Current.UploadFileAsync("<URL HERE>", new FilePathItem("<FIELD NAME HERE>",filePath), new Dictionary<string, string>()
            {
               /*<HEADERS HERE>*/
            });

this is an error

Server Error

405 - HTTP verb used to access this page is not allowed.

The page you are looking for cannot be displayed because an invalid method (HTTP verb) was used to attempt access.