etherpad_mypads impossible to upgrade from version 1.8.4~ynh2 to version 1.8.18~ynh2

[DavidLep0le]

*Trying to upgrade from version 1.8.4ynh2 to the new version : 1.8.18ynh2 *

Context

• Hardware: PC I5 16G RAM and 28T on 6 hardrives with Yunohost 11.0.10.2 upgrade from previous version on stretch
• I have access to my server: Through SSH | through the webadmin |and possibility by direct access via keyboard / screen | ...
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: no
• Only change the data location for nextcloud
• If upgrading, current package version: version 1.8.4~ynh2

Steps to reproduce

-Same issue by ssh or on webadmin

• The process to upgrade start and fail on following errors:

Upgrading source files...
tar: bin : un lien symbolique ne peut pas être créé vers « src/bin »: Le fichier existe
tar: tests : un lien symbolique ne peut pas être créé vers « src/tests »: Le fichier existe
tar: Arrêt avec code d'échec à cause des erreurs précédentes
[Error] Upgrade failed.
rmdir: failed to remove '/var/lib/libreoffice/share/prereg/': No such file or directory
rmdir: failed to remove '/var/lib/libreoffice/share/': No such file or directory
rmdir: failed to remove '/var/lib/libreoffice/program/': No such file or directory
rmdir: failed to remove '/var/lib/libreoffice': No such file or directory
rmdir: failed to remove '/var/lib/libreoffice': No such file or directory
Building PostgreSQL dictionaries from installed myspell/hunspell packages...
Removing obsolete dictionary files:
/var/cache/postgresql/dicts/en_us.affix
/var/cache/postgresql/dicts/en_us.dict
/usr/share/postgresql//11/tsearch_data/en_us.affix
/usr/share/postgresql//13/tsearch_data/en_us.affix
/usr/share/postgresql//11/tsearch_data/en_us.dict
/usr/share/postgresql//13/tsearch_data/en_us.dict
rmdir: failed to remove '/var/lib/libreoffice/share/config': No such file or directory
rmdir: failed to remove '/var/lib/libreoffice/share': No such file or directory
79430 Building PostgreSQL dictionaries from installed myspell/hunspell packages...
79430 en_us
79436 Removing obsolete dictionary files:
107056 dpkg: avertissement: mauvaise syntaxe de la version « v8.0.1 »: le numéro de version ne commence pas par un chiffre
111341 /!\ Packagers! You added a custom service without specifying a description. Please add a proper Description in the systemd configuration, or use --description to explain what the service does in a similar fashion to existing services.
The app was restored to the way it was before the failed upgrade

Logs

[https://paste.yunohost.org/raw/sivaciyose]

thanks for help