right now giving file not found error:

Checking whether to refresh metadata for openSUSE-Leap-42.3-Update
Retrieving: repomd.xml
.........................................................................................................[done]
Retrieving: media
.........................................................................................................[not
found]
Retrieving: repomd.xml.asc
.....................................................................................................[done]
Retrieving: repomd.xml.key
.....................................................................................................[done]
Retrieving: repomd.xml
.........................................................................................................[done]
  Repository:       openSUSE-Leap-42.3-Update
  Key Name:         openSUSE Project Signing Key <opensuse@opensuse.org>
  Key Fingerprint:  22C07BA5 34178CD0 2EFE22AA B88B2FD4 3DBDC284
  Key Created:      Mon 05 May 2014 10:37:40 AM CEST
  Key Expires:      Thu 02 May 2024 10:37:40 AM CEST
  Rpm Name:         gpg-pubkey-3dbdc284-53674dd4
Retrieving:
94881a17dd8a55d846b81738cd012587b05f0338e784ea2fee49d5551fa93cd9-app-icons.tar.gz
......................[done (4.4 KiB/s)]
Retrieving:
50325b09b1a1ac25a2b9fe3452f38b349b9dd2ff055f1c3157ba5683d085863c-deltainfo.xml.gz
.............................[not found]
File
'./repodata/50325b09b1a1ac25a2b9fe3452f38b349b9dd2ff055f1c3157ba5683d085863c-deltainfo.xml.gz'
not found on medium 'http://downlo                                             
 ad.opensuse.org/update/leap/42.3/oss/'
Abort, retry, ignore? [a/r/i/...? shows all options] (a):