ISO images uploaded. checksum changed

Hello

I need help please.
Something worng in ISO images uploaded to RHV 4.4,
This is for all ISO images I am using, although I have verified ISO checksum on my PC.
below an example uploading Ubuntu mini-18.04.iso:

RHV manager web UI, events shows:
The disk 'mini-18.04.iso' was successfully added.
Image Upload with disk mini-18.04.iso was initiated by admin@internal-authz.
Add-Disk operation of 'mini-18.04.iso' was initiated by the system.

when I create a VM and boot from the ISO, VM console shows:
Booting from DVD/CD...
Boot failed: Could not read from CDROM (code 0005)
Booting from Hard Disk...
Boot failed: not a bootable disk
No bootable device.

engine.log shows:
engine.log:2021-10-11 14:28:35,643+03 INFO [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-14) [] EVENT_ID: USER_ADD_DISK_FINISHED_SUCCESS(2,021), The disk 'mini-18.04.iso' was successfully added.
engine.log-2021-10-11 14:28:35,968+03 INFO [org.ovirt.engine.core.bll.storage.disk.image.TransferImageStatusCommand] (default task-47) [87c9e6a3-3057-4b6b-9edd-b68bb2927788] Running command: TransferImageStatusCommand internal: false. Entities affected : ID: b2f408c8-07a2-4942-8223-731c63096113 Type: SystemAction group CREATE_DISK with role type USER
engine.log-2021-10-11 14:28:36,648+03 ERROR [org.ovirt.engine.core.bll.storage.disk.image.TransferDiskImageCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-45) [ab79f7e5-0425-4e94-a3d1-362aa5017f6a] Failed to add disk for image transfer command '656d3a2f-609c-4658-9014-4656c7f22595'
engine.log-2021-10-11 14:28:37,656+03 INFO [org.ovirt.engine.core.bll.storage.disk.image.ImageTransferUpdater] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-73) [ab79f7e5-0425-4e94-a3d1-362aa5017f6a] Updating image transfer 656d3a2f-609c-4658-9014-4656c7f22595 phase to Finished Failure
engine.log-2021-10-11 14:28:37,678+03 WARN [org.ovirt.engine.core.bll.storage.disk.RemoveDiskCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-73) [6277a1bf] Validation of action 'RemoveDisk' failed for user admin@internal-authz. Reasons: VAR__ACTION__REMOVE,VAR__TYPE__DISK,ACTION_TYPE_FAILED_VM_IMAGE_DOES_NOT_EXIST
engine.log-2021-10-11 14:28:37,678+03 INFO [org.ovirt.engine.core.bll.storage.disk.RemoveDiskCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-73) [6277a1bf] Lock freed to object 'EngineLock:{exclusiveLocks='[]', sharedLocks='[]'}'
engine.log-2021-10-11 14:28:37,678+03 ERROR [org.ovirt.engine.core.bll.storage.disk.image.TransferDiskImageCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-73) [6277a1bf] Failed to transfer disk '00000000-0000-0000-0000-000000000000' (command id '656d3a2f-609c-4658-9014-4656c7f22595')
engine.log-2021-10-11 14:28:37,679+03 INFO [org.ovirt.engine.core.bll.storage.disk.image.TransferDiskImageCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-73) [ab79f7e5-0425-4e94-a3d1-362aa5017f6a] Ending command 'org.ovirt.engine.core.bll.storage.disk.image.TransferDiskImageCommand' successfully.
engine.log-2021-10-11 14:28:37,687+03 INFO [org.ovirt.engine.core.bll.storage.disk.image.TransferDiskImageCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-73) [ab79f7e5-0425-4e94-a3d1-362aa5017f6a] Lock freed to object 'EngineLock:{exclusiveLocks='[]', sharedLocks='[]'}'
engine.log-2021-10-11 14:28:37,690+03 ERROR [org.ovirt.engine.core.bll.storage.disk.image.TransferDiskImageCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-73) [ab79f7e5-0425-4e94-a3d1-362aa5017f6a] Error during log command: org.ovirt.engine.core.bll.storage.disk.image.TransferDiskImageCommand. Exception null
engine.log-2021-10-11 14:28:39,973+03 INFO [org.ovirt.engine.core.bll.storage.disk.image.TransferImageStatusCommand] (default task-47) [615fb3b5-48d2-4a74-8352-c393fe1c6967] Running command: TransferImageStatusCommand internal: false. Entities affected : ID: b2f408c8-07a2-4942-8223-731c63096113 Type: SystemAction group CREATE_DISK with role type USER

On the NFS server:
[root@foundation /]# cat /nfs_domain/b2f408c8-07a2-4942-8223-731c63096113/images/81897c89-79fe-47cc-bc61-d587b613bde2/5f14246f-3646-4375-80ba-881895603b2f.meta
CAP=67108864
CTIME=1633951704
DESCRIPTION={"DiskAlias":"mini-18.04.iso","DiskDescription":"mini-18.04.iso"}
DISKTYPE=ISOF
DOMAIN=b2f408c8-07a2-4942-8223-731c63096113
FORMAT=RAW
GEN=0
IMAGE=81897c89-79fe-47cc-bc61-d587b613bde2
LEGALITY=LEGAL
PUUID=00000000-0000-0000-0000-000000000000
TYPE=SPARSE
VOLTYPE=LEAF
EOF

[root@foundation 81897c89-79fe-47cc-bc61-d587b613bde2]# ls -lshi 5f14246f-3646-4375-80ba-881895603b2f
585302 4.0K -rw-rw----. 1 36 kvm 64M Oct 11 14:28 5f14246f-3646-4375-80ba-881895603b2f

[root@foundation 81897c89-79fe-47cc-bc61-d587b613bde2]# sha256sum 5f14246f-3646-4375-80ba-881895603b2f
3b6a07d0d404fab4e23b6d34bc6696a6a312dd92821332385e5af7c01c421351 5f14246f-3646-4375-80ba-881895603b2f

And on my PC:
$ sha256sum mini-18.04.iso
bed8a55ae2a657f8349fe3271097cff3a5b8c3d1048cf258568f1601976fa30d mini-18.04.iso