Hello. I'm using the C# client to convert an uploaded .PPTX file (I've got the bytes in MemoryStream) into list of JPG files. I get an error when I call the convertApi.ConvertAsync(...) method. The error in accurately states that the stream is empty when in fact it isn't. When I attempted using the same code to convert an html to pdf file, it worked just fine. It doesn't feel like the issue is on my side. Below is the code I'm using.