Can't update my server

[webgear]

Hello,

I have a problem when i want to update my server. Like always, i click on “update selected packages”, but this time when i do, this error message appear :

Reading package lists…
Building dependency tree…
Reading state information…
The following packages were automatically installed and are no longer required:
libclamav7 libicu64 sgml-base xml-core
Use ‘apt-get autoremove’ to remove them.
Suggested packages:
dbus-x11 php5-user-cache
The following packages will be upgraded:
dbus libapache2-mod-php5 libdbus-1-3 libpcre3 libtasn1-6 libtirpc1
linux-image-4.19-ovh-xxxx-std-ipv6-64 php5-cgi php5-cli php5-common php5-fpm
php5-mcrypt php5-mysql php5-readline php7.3-cli php7.3-common php7.3-gd
php7.3-json php7.3-mysql php7.3-opcache php7.3-readline php7.3-xml
php7.4-cli php7.4-common php7.4-gd php7.4-json php7.4-opcache
php7.4-readline php7.4-xml usermin virtualmin-config webmin webmin-ruby-gems
webmin-virtual-server webmin-virtualmin-awstats webmin-virtualmin-dav
webmin-virtualmin-git webmin-virtualmin-htpasswd webmin-virtualmin-init
webmin-virtualmin-registrar webmin-virtualmin-slavedns
webmin-virtualmin-sqlite
42 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 77.6 MB of archives.
After this operation, 537 MB disk space will be freed.
WARNING: The following packages cannot be authenticated!
libpcre3 php7.3-readline php7.3-mysql php7.3-gd php7.3-xml php7.3-opcache
php7.3-json php7.3-cli php7.3-common php7.4-json php7.4-xml php7.4-readline
php7.4-gd php7.4-opcache php7.4-cli php7.4-common
E: There are problems and -y was used without --force-yes
… install failed!

No packages were installed. Check the messages above for the cause of the error.

Can you help me, thanks you

[calport]

@webgear

WARNING: The following packages cannot be authenticated!

sudo apt-key update
sudo apt-get update
sudo apt-get install libpcre3 -y

Then update the server as usual via the Webmin interface.