How to solve this problem , it appears 3 days ago on my system update
Debian 8.1
Some problems occurred with the System Updates tool on your server host.aaaaaa.net. Please resolve them manually.
Reason: 2019-04-16 04:19:08 INFO: pum is called with arguments: ['--list', '--repo-info', '--json']
2019-04-16 04:19:15 ERROR: W:Failed to fetch
http://mirror.leaseweb.net/debian/di...ates/InRelease Unable to find expected entry 'main/source/Sources' in Release file (Wrong sources.list entry or malformed file)
, E:Some index files failed to download. They have been ignored, or old ones used instead.
2019-04-16 04:19:15 ERROR: Exited with returncode 1.
