package tntnet 2.2.1-4build1 failed to install/upgrade: installed tntnet package post-installation script subprocess returned error exit status 1

[EJJADI]

Created symlink /etc/systemd/system/multi-user.target.wants/tntnet.service → /lib/systemd/system/tntnet.service.
Job for tntnet.service failed because a timeout was exceeded.
See "systemctl status tntnet.service" and "journalctl -xe" for details.
invoke-rc.d: initscript tntnet, action "start" failed.
● tntnet.service - Tntnet web server
     Loaded: loaded (/lib/systemd/system/tntnet.service; enabled; vendor preset: enabled)
     Active: failed (Result: timeout) since Sat 2021-04-10 18:05:32 CEST; 31ms ago
    Process: 890133 ExecStart=/usr/bin/tntnet (code=killed, signal=TERM)

avril 10 18:04:55 t2eis tntnet[895615]: address :80 in use: iostream error
avril 10 18:05:01 t2eis tntnet[896429]: address :80 in use: iostream error
avril 10 18:05:07 t2eis tntnet[897182]: address :80 in use: iostream error
avril 10 18:05:13 t2eis tntnet[898047]: address :80 in use: iostream error
avril 10 18:05:19 t2eis tntnet[898768]: address :80 in use: iostream error
avril 10 18:05:25 t2eis tntnet[899398]: address :80 in use: iostream error
avril 10 18:05:31 t2eis tntnet[899930]: address :80 in use: iostream error
avril 10 18:05:32 t2eis systemd[1]: tntnet.service: start operation timed out. Terminating.
avril 10 18:05:32 t2eis systemd[1]: tntnet.service: Failed with result 'timeout'.
avril 10 18:05:32 t2eis systemd[1]: Failed to start Tntnet web server.

ProblemType: Package
DistroRelease: Ubuntu 20.10
Package: tntnet 2.2.1-4build1
ProcVersionSignature: Ubuntu 5.8.0-48.54-generic 5.8.18
Uname: Linux 5.8.0-48-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
CasperMD5CheckResult: skip
Date: Sat Apr 10 18:05:32 2021
ErrorMessage: installed tntnet package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2021-03-19 (22 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-0ubuntu1
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.20.5ubuntu2
 apt 2.1.10ubuntu0.3
SourcePackage: tntnet
Title: package tntnet 2.2.1-4build1 failed to install/upgrade: installed tntnet package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to groovy on 2021-03-20 (21 days ago)

[Launchpad Janitor (janitor)]

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