Error message during update from 18.04.5 LTS to 20

[EA3BIL Rafa]

Tried at least three time to update from 18.04.5 LTS to 20.04?

Got error message about ubuntu minial overload ????

No idea on how to fix this.

Thanks for help !!!

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 4.15.0-112.113-generic 4.15.18
Uname: Linux 4.15.0-112-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
Date: Tue Sep 1 15:10:34 2020
InstallationDate: Installed on 2015-04-22 (1959 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-09-01 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2020-09-01 15:08:18.443195
 Log time: 2020-09-01 15:09:10.093691
 Log time: 2020-09-01 15:10:21.870555
 Log time: 2020-09-01 15:10:39.784224
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades: 2020-08-24T14:20:20.096299