Erreur installation application PGADMIN

Les commandes fonctionnent normalement quand je les lances tel qu’écrite précédemment.
Par contre avec

yunohost app install -l pgAdmin GitHub - YunoHost-Apps/pgadmin_ynh: PostgreSQL web admin tool package for YunoHost

Attention : [ERR] !!
Attention : pgadmin’s script has encountered an error. Its execution was cancelled.
Attention : !!
Attention : Please find here an extract of the log before the crash:
Attention : [DEBUG]: DEBUG -’
Attention : [DEBUG]: DEBUG - +++ basename /opt/yunohost/pgadmin
Attention : [DEBUG]: DEBUG - ++ PS1=‘(pgadmin) ’
Attention : [DEBUG]: DEBUG - ++ export PS1
Attention : [DEBUG]: DEBUG - ++ alias pydoc
Attention : [DEBUG]: DEBUG -’
Attention : [DEBUG]: DEBUG - ++ hash -r
Attention : [DEBUG]: DEBUG - + pip3 install --upgrade pip
Attention : [DEBUG]: DEBUG - Collecting pip
Attention : [DEBUG]: DEBUG - Using cached https://files.pythonhosted.org/packages/54/0c/d01aa759fdc501a58f431eb594a17495f15b88da142ce14b5845662c13f3
/pip-20.0.2-py2.py3-none-any.whl
Attention : [DEBUG]: DEBUG - Installing collected packages: pip
Attention : [DEBUG]: DEBUG - Found existing installation: pip 9.0.1
Attention : [DEBUG]: DEBUG - Uninstalling pip-9.0.1:
Attention : [DEBUG]: DEBUG - Successfully uninstalled pip-9.0.1
Attention : [DEBUG]: DEBUG - Successfully installed pip-20.0.2
Attention : [DEBUG]: DEBUG - + pip3 install --upgrade https://ftp.postgresql.org/pub/pgadmin/pgadmin4/v4.17/pip/pgadmin4-4.17-py2.py3-none-any.whl
Attention : [DEBUG]: DEBUG - Collecting pgadmin4==4.17
Attention : [DEBUG]: WARNING - sslv3 alert handshake failure (_ssl.c:720)‘),)’: /pub/pgadmin/pgadmin4/v4.17/pip/pgadmin4-4.17-py2.py3-none-any.whl
Attention : [DEBUG]: WARNING - sslv3 alert handshake failure (_ssl.c:720)‘),)’: /pub/pgadmin/pgadmin4/v4.17/pip/pgadmin4-4.17-py2.py3-none-any.whl
Attention : [DEBUG]: WARNING - sslv3 alert handshake failure (_ssl.c:720)‘),)’: /pub/pgadmin/pgadmin4/v4.17/pip/pgadmin4-4.17-py2.py3-none-any.whl
Attention : [DEBUG]: WARNING - sslv3 alert handshake failure (_ssl.c:720)‘),)’: /pub/pgadmin/pgadmin4/v4.17/pip/pgadmin4-4.17-py2.py3-none-any.whl
Attention : [DEBUG]: WARNING - sslv3 alert handshake failure (_ssl.c:720)‘),)’: /pub/pgadmin/pgadmin4/v4.17/pip/pgadmin4-4.17-py2.py3-none-any.whl
Attention : [DEBUG]: WARNING - sslv3 alert handshake failure (_ssl.c:720)'),))
Attention : [DEBUG]: WARNING -
Attention : [DEBUG]: DEBUG - + ynh_exit_properly