Hello Nguyen,
Error 552 is a return error code that issued by your FTP server. It means storage allocation for FTP is exceeded (for current directory or dataset) and consequently the requested file action aborted.
Although you may have enough free spaces on your VM's disks to accommodate your upload files, however you should also make sure that FTP server quota settings are well configured to allocate enough free space and allow uploading your files on the current directory.
I hope this helps you to troubleshoot the issue.