clonezilla:Failed to use partclone program to save or restore an image!

When I was using the clonezilla-live-20220502-jammy-amd64 version of clonezilla for a linux system backup, the following error occurred. When I executed the e2fsck -f /dev/mmcblk0p2 command and backed up again, there was no error. I want to know the specific reason for it. I am concerned about any hidden system bugs that may cause exceptions when running programs on the backup system in the future. Use partclone with pigz to save the image. Image file will be split with size limit 4096 MB. If this action fails or hangs, check: * Is the disk full ? Running: partclone.ext4 -2 10485760 -L /var/log/partclone.log -c -s /dev/sad2 Partclone y03.20 http://partclone.org Starting to clone device (/dey/mmcblkOp2) to image (-) Reading Super Block Calculating bitmap.... Please wait ..1.00%extfsclone.c: bi Elapsed: 00:00:01, Remaining: 00:01:39, Completed:1.00% Please run fsck to check and repair the file system Partclone fail, please check /var/log/partclone.logChecking the disk space .. Failed to use partclone program to save or restore an image!