adduser : Attention ! Le répertoire personnel « /var/lib/sendmail » n'appartient pas à l'utilisateur que vous êtes en train de créer.
Paramétrage de sendmail-bin (8.15.2-10) ...
update-alternatives: utilisation de « /usr/lib/sm.bin/sendmail » pour fournir « /usr/sbin/sendmail-mta » (sendmail-mta) en mode automatique
update-alternatives: utilisation de « /usr/lib/sm.bin/sendmail » pour fournir « /usr/sbin/sendmail-msp » (sendmail-msp) en mode automatique

You are doing a new install, or have erased /etc/mail/sendmail.mc.
If you've accidentaly erased /etc/mail/sendmail.mc, check /var/backups.

I am creating a safe, default sendmail.mc for you and you can
run sendmailconfig later if you need to change the defaults.

Updating sendmail environment ...
Validating configuration.
Writing configuration to /etc/mail/sendmail.conf.
Writing /etc/cron.d/sendmail.
Could not open /etc/mail/databases(No such file or directory), creating it.
Could not open /etc/mail/sendmail.mc(No such file or directory)
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Writing configuration to /etc/mail/sendmail.conf.
Writing /etc/cron.d/sendmail.
Turning off Host Status collection
Could not open /etc/mail/databases(No such file or directory), creating it.
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Creating /etc/mail/databases...

Checking filesystem, this may take some time - it will not hang!
  ...   Done.
 
Checking for installed MDAs...
Adding link for newly extant program (mail.local)
Adding link for newly extant program (procmail)
sasl2-bin not installed, not configuring sendmail support.

To enable sendmail SASL2 support at a later date, invoke "/usr/share/sendmail/update_auth"

 
Creating/Updating SSL(for TLS) information
Creating /etc/mail/tls/starttls.m4...
Creating SSL certificates for sendmail.
Generating DSA parameters, 2048 bit long prime
This could take some time
.+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*
...........+...+.......+......+.....+.........................+.+...+.......+..+..............+....................+..............+................................+.....+.................................+................+....+..................................................+......................+..+....+.+.........+............+........+............+.......+........................+......+..+.....+.+............+...........................+....+..................+..+..+...+.+..+.+................+........+........+....+.+.....+.........+..........+...+..+...............+.......+..................+.................+.....+.............................+.................+...+...................+........................+......+..+.+.............+.......+....+....+..............+......+..............+....+...............+........+.+..............+.........+......+.....+..............+......................+.........+......................+....+........+...+...+..........+.........+.............+....+.....+..................+...+...+..........+......+.....+...+.........+.....+............................+......+................+....+........................+..+.........+...+...+...+.......+.......+.........+......+....................................+..............+.....+.......+.........................+....+....+....+..+.........+..............+.....+.+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*
Generating RSA private key, 2048 bit long modulus (2 primes)
..............................+++++
...........+++++
e is 65537 (0x010001)

*** *** *** WARNING *** WARNING *** WARNING *** WARNING *** *** ***

Everything you need to support STARTTLS (encrypted mail transmission
and user authentication via certificates) is installed and configured
but is *NOT* being used.

To enable sendmail to use STARTTLS, you need to:
1) Add this line to /etc/mail/sendmail.mc and optionally
   to /etc/mail/submit.mc:
  include(`/etc/mail/tls/starttls.m4')dnl
2) Run sendmailconfig
3) Restart sendmail


Updating /etc/hosts.allow, adding "sendmail: all".

Please edit /etc/hosts.allow and check the rules location to
make sure your security measures have not been overridden -
it is common to move the sendmail:all line to the *end* of
the file, so your more selective rules take precedence.
Checking {sendmail,submit}.mc and related databases...
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Creating /etc/mail/databases...
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Creating /etc/mail/databases...
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Creating /etc/mail/Makefile...
Reading configuration from /etc/mail/sendmail.conf.
Validating configuration.
Writing configuration to /etc/mail/sendmail.conf.
Writing /etc/cron.d/sendmail.
Disabling HOST statistics file(/var/lib/sendmail/host_status).
Creating /etc/mail/sendmail.cf...
Creating /etc/mail/submit.cf...
Informational: confCR_FILE file empty: /etc/mail/relay-domains
Warning: confCT_FILE source file not found: /etc/mail/trusted-users
 it was created
Informational: confCT_FILE file empty: /etc/mail/trusted-users
Warning: confCW_FILE source file not found: /etc/mail/local-host-names
 it was created
Warning: access_db source file not found: /etc/mail/access
 it was created
Updating /etc/mail/access...
Linking /etc/aliases to /etc/mail/aliases
Informational: ALIAS_FILE file empty: /etc/mail/aliases
Updating /etc/mail/aliases...
/etc/mail/aliases: 0 aliases, longest 0 bytes, 0 bytes total
 
Warning: 3 database(s) sources
	were not found, (but were created)
	please investigate.
Paramétrage de sensible-mda (8.15.2-10) ...
Paramétrage de sendmail (8.15.2-10) ...
Traitement des actions différées (« triggers ») pour man-db (2.8.3-2ubuntu0.1) ...
Traitement des actions différées (« triggers ») pour ureadahead (0.100.0-21) ...
ureadahead will be reprofiled on next reboot
Traitement des actions différées (« triggers ») pour install-info (6.5.0.dfsg.1-2) ...
Traitement des actions différées (« triggers ») pour libc-bin (2.27-3ubuntu1.2) ...
Traitement des actions différées (« triggers ») pour systemd (237-3ubuntu10.38) ...




// "post-update-cmd": [
        //     "Illuminate\\Foundation\\ComposerScripts::postUpdate",
        //     "php artisan optimize"
        // ],
                "phpoffice/phpspreadsheet": "^1.10",

sudo a2dismod php7.4

cd /etc/apache2/mods-enabled
ls 
systemctl restart apache2
