rsync: [sender] read errors mapping "file" : Input/output error (5)

Hello.

Everytime I try to copy a file from one USB disk to another one (does not
matter which one),I get this kind of error :


mario@Z390-AORUS-PRO-DEST:/mnt/zroot-133/A_FILES/Backup/FreeBSD# rsync
-avxHAXP FreeBSD-141-UFS-sdc-DarkMatter.img
/mnt/sdj1/OS/Backup/BSD/FreeBSD --ignore-existing

sending incremental file list
FreeBSD-141-UFS-sdc-DarkMatter.img

320,072,933,376 100%   83.57MB/s    1:00:52 (xfr#1, to-chk=0/1)
rsync: [sender] read errors mapping
"/mnt/zroot-133/A_FILES/Backup/FreeBSD/FreeBSD-141-UFS-sdc-DarkMatter.img":
Input/output error (5)

WARNING: FreeBSD-141-UFS-sdc-DarkMatter.img failed verification --
update discarded (will try again).

FreeBSD-141-UFS-sdc-DarkMatter.img
320,072,933,376 100%   76.40MB/s    1:06:35 (xfr#2, to-chk=0/1)
rsync: [sender] read errors mapping
"/mnt/zroot-133/A_FILES/Backup/FreeBSD/FreeBSD-141-UFS-sdc-DarkMatter.img":
Input/output error (5)

ERROR: FreeBSD-141-UFS-sdc-DarkMatter.img failed verification --
update discarded.

sent 640,302,152,539 bytes  received 60 bytes  83,716,042.70 bytes/sec
total size is 320,072,933,376  speedup is 0.50
rsync error: some files/attrs were not transferred (see previous
errors) (code 23) at main.c(1334) [sender=3.2.4dev]


Can I know why ? And there is a parameter that I can use to fix that error
? "--ignore-existing" is a parameter that I've got from here :


How to interpret and fix a Input/output error in Linux?
<https://superuser.com/questions/676649/how-to-interpret-and-fix-a-input-output-error-in-linux>


but it didn't work. From the post it's not sure how to fix the error.
-- 
Mario.

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