Rysnc #error #code 19 (rsync-restore , rsync-backup , rsync-error ) occurs when there is an issue in connection during file transfer processing.
To fix this error, simply update the rsync to the latest version. Below are the command to update the #rsync in #CentOS, #Ubuntu and #Macos respectively;
For Centos, use the command;
yum install rsync
More Info >>
https://ibmimedia.com/blog/90/solve-rsync-error-code-19