Phpbb 3.3.8 upgrade failed

[YouKnowHorst]

Hello to all!
I’ve tried to update phpbb 3.3.5~ynh1 to 3.3.8~ynh1 today with the following error (see below).

Any ideas about the missing package?

Thank you in advance!

My YunoHost server

Hardware: hosted VPS
YunoHost version: 4.3.6.3
I have access to my server : Through SSH
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no

Description of my issue

Update phpbb 3.3.5~ynh1 to 3.3.8~ynh1 failed due to missing package

Full log here: https://paste.yunohost.org/raw/ebuhuyokek

[...] Upgrading the phpbb...

mv: cannot move '/var/www/phpbb/install' to '/var/www/phpbb/install_old/install': Directory not empty

[Error] Upgrade failed.

E: Unable to locate package phpbb-ynh-deps

[yalh76]

You just have to delete /var/www/phpbb/install_old/install before upgrading

[YouKnowHorst]

Thanks.
It worked on the next day without any error message (and without deleting the install_old/install folder).