The error in your log is:
Paramétrage de update-notifier-common (3.168.7) ...
Traceback (most recent call last):
File "/usr/lib/update-notifier/package-data-downloader", line 24, in
import debian.deb822
File "/usr/lib/python3/dist-packages/debian/deb822.py", line 38, in
import chardet
ImportError: No module named 'chardet'
dpkg: erreur de traitement du paquet update-notifier-common (--configure) :
le sous-processus script post-installation installé a retourné une erreur de
sortie d'état 1
update-notifier-common depends on python3-debian, which depends on
python3-chardet. Why is the chardet module not on your python path?
** Changed in: update-notifier (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1750756
Title:
package update-notifier-common 3.168.7 failed to install/upgrade: le
sous-processus script post-installation installé a retourné une erreur
de sortie d'état 1
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