Cannot add new domain

Hi, I do not know exactly why this problem is appearing, but I would like some help…

My YunoHost server

Hardware: Raspberry Pi 4B at home …
YunoHost version: 11.1.20 (stable)
I have access to my server : Through SSH and the webadmin
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no

Description of my issue

I can’t add a new domain.

Full log:

2023-05-26 20:31:27,491: WARNING - Using configuration from /etc/yunohost/certs//idontneedpuffer.maindomain.tld-history/20230526.173127-selfsigned/openssl.cnf
unable to load number from /usr/share/yunohost/ssl/serial
error while loading serial number
547606317568:error:0D066096:asn1 encoding routines:a2i_ASN1_INTEGER:short line:../crypto/asn1/f_int.c:140:

/usr/share/yunohost/ssl/serial is empty

Fixed it

Replaced the contents of /usr/share/yunohost/ssl/serial with /usr/share/yunohost/ssl/serial.old