We have a script that uploads PDF files to cloud files and we have one file then when we try to uploaded it gives us the following error:

> Client error response [status code] 412 [reason phrase] Precondition Failed [url] https://storage101.ord1.clouddrive.com/v1/MossoCloudFS_107b7343-c3ff-446a-9504-dc318c7b7138/filepath.pdf

We're using the php-opencloud library to perform the uploads and the error message has only landed me on generic error pages.  Any idea what might be causing this or other steps we can perform to debug it?