Webdav Issues with Chunk

My server uses WebDAV so I use updraft WebDAV to connect and upload. But on sites with large media library, the backup is not working it keeps stuck at 100% on uploading first split file of “uploads” folder.

so I decided to disable chunk for WebDAV

define(‘UPDRAFTPLUS_WEBDAV_NEVER_CHUNK’, true);

put his on wp-config.php

but still, the updraft trying to send chunked upload and the backup is not completing.

My WebDAV server doesn’t support chunked uploads. But I can upload files large up 2GB.