E: The value 'bionic-security' is invalid for APT::Default-Release as such a release is not available in the sources E: _cache->open() failed, please report.

[Islam Alshaikh إسلام الشيخ]

Hello,

I have this msg after upgrading from 18.04 in synpatic:

E: The value 'bionic-security' is invalid for APT::Default-Release as such a release is not available in the sources
E: _cache->open() failed, please report.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: synaptic 0.84.6ubuntu5
ProcVersionSignature: Ubuntu 5.8.0-23.24-generic 5.8.14
Uname: Linux 5.8.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Sat Oct 17 01:01:04 2020
InstallationDate: Installed on 2020-04-21 (178 days ago)
InstallationMedia: Kubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
ProcEnviron:
 LANGUAGE=ar:en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ar_SA.UTF-8
 SHELL=/bin/bash
SourcePackage: synaptic
UpgradeStatus: Upgraded to groovy on 2020-10-16 (0 days ago)

[Eduardo Barretto (ebarretto)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.