I have tested the latest version of Aspose.Words Cloud SDK for Node.js and it is working fine. Please try the latest SDK version of Aspose.Words Cloud SDK for Node.js, it will resolve the issue.
Upgrading the aspose package sorted out the corruption issue.
I still have the problem with the operation hanging sometimes.
I’ve just tried to batch convert 155 documents. It worked for 154 and now it hangs on the last one, for some reason.
It is good to know that you have managed to resolve your issue.
I am afraid it is difficult to comment on the issue without replicating it at our side. Can you please check the file 155 separately and confirm whether it is a file related issue or some other?