Stream incorrect or unsupported! AmazonS3 Storage exception: The specified key does (truncated...)

[fernando47924]

Stream incorrect or unsupported! AmazonS3 Storage exception: The specified key does (truncated...)

Message: [400] Client error: POST https://api.aspose.cloud/v3.0/3d/saveas/newformat?name=16118387621072555290_html-test-temp.html&newformat=pdf&newfilename=testfilepdf.pdf&IsOverwrite=false resulted in a 400 Bad Request response: {"error":{"code":"error","message":"Stream incorrect or unsupported! AmazonS3 Storage exception: The specified key does (truncated...)
https://prnt.sc/ujsole

Error: PostConvertByFormat. Parameters: name 'My Files\16118387621072555290_html-test-temp.html', newformat 'pdf', newfilename 'testfilepdf.pdf', IsOverwrite 'False'. Exception: Stream incorrect or unsupported! Can't handle this file format.

$threedApi->postConvertByFormat('16118387621072555290_html-test-temp.html','pdf','testfilepdf.pdf');

i’m also tried to convert a simple html file to pdf file but get same error
can you explain why i’m getting AmazonS3 Storage exception error.
i’m using aspose cloud storage