Lighttpd

I am trying to set up ssl in lighttpd.

RADXA E25 (Rockchip RK3568)
- OS Armbian Linux 6.12.19-current-rockchip (Ubuntu server 24.04)
- lighttpd version: 1.4.74 (ssl)
- OpenSSL version: 3.0.13 (pre-installed)
- web client: Firefox 136.0.1

for <mydomain> I have got the letsencrypt certificate:

- /etc/letsencrypt/live/ <mydomain> /fullchain.pem
- /etc/letsencrypt/live/ <mydomain> /privkey.pem

lighttpd.conf (# comments omitted):

Debian lighttpd base configuration

server.modules = (
        "mod_indexfile",
        "mod_access",
        "mod_alias",
        "mod_redirect",
)
server.modules += ("mod_openssl")
$SERVER["socket"] == ":443" {
    ssl.engine = "enable" 
    ssl.pemfile = "/etc/letsencrypt/live/ _<mydomain>_ /fullchain.pem" 
    ssl.privkey = "/etc/letsencrypt/live/ _<mydomain>_ /privkey.pem" 
  }
server.name                 = " _<mydomain>_ " 
server.document-root        = "/var/www/html" 
server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
server.errorlog             = "/var/log/lighttpd/error.log" 
server.pid-file             = "/run/lighttpd.pid" 
server.username             = "www-data" 
server.groupname            = "www-data" 
server.port                 = 80

server.http-parseopts = (
  "header-strict"           => "enable",# default
  "host-strict"             => "enable",# default
  "host-normalize"          => "enable",# default
  "url-normalize-unreserved"=> "enable",# recommended highly
  "url-normalize-required"  => "enable",# recommended
  "url-ctrls-reject"        => "enable",# recommended
  "url-path-2f-decode"      => "enable",# recommended highly (unless breaks app)
 #"url-path-2f-reject"      => "enable",
  "url-path-dotseg-remove"  => "enable",# recommended highly (unless breaks app)
 #"url-path-dotseg-reject"  => "enable",
 #"url-query-20-plus"       => "enable",# consistency in query string
  "url-invalid-utf8-reject" => "enable",# recommended highly (unless breaks app)
)

index-file.names            = ( "index.php", "index.html" )
url.access-deny             = ( "~", ".inc" )
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

include_shell "/usr/share/lighttpd/create-mime.conf.pl" 
include "/etc/lighttpd/conf-enabled/*.conf" 
include_shell "/usr/share/lighttpd/use-ipv6.pl " + server.port
include "/etc/lighttpd/vhosts/*.conf" 

I get the following error message:

~$ sudo service lighttpd start
Job for lighttpd.service failed because the control process exited with error code.
See "systemctl status lighttpd.service" and "journalctl -xeu lighttpd.service" for details.
~$ lighttpd -tt -f /etc/lighttpd/lighttpd.conf
2025-03-20 19:40:23: (plugin.c.221) dlopen() failed for: /usr/lib/lighttpd/mod_openssl.so /usr/lib/lighttpd/mod_openssl.so: cannot open shared object file: No such file or directory
2025-03-20 19:40:23: (server.c.1649) loading plugins finally failed

Actually no mod_openssl.so file in /usr/lib/lighttpd:

~$ ls /usr/lib/lighttpd -la
total 1096
drwxr-xr-x 2 root root 4096 Mar 11 17:02 .
drwxr-xr-x 73 root root 4096 Mar 18 18:25 ..
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_accesslog.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_ajp13.so
-rw-r--r-- 1 root root 67640 Apr 1 2024 mod_auth.so
-rw-r--r-- 1 root root 67688 Apr 1 2024 mod_authn_file.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_cgi.so
-rw-r--r-- 1 root root 67656 Apr 1 2024 mod_dirlisting.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_extforward.so
-rw-r--r-- 1 root root 67632 Apr 1 2024 mod_h2.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_proxy.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_rrdtool.so
-rw-r--r-- 1 root root 67432 Apr 1 2024 mod_sockproxy.so
-rw-r--r-- 1 root root 67640 Apr 1 2024 mod_ssi.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_status.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_userdir.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_vhostdb.so
-rw-r--r-- 1 root root 67592 Apr 1 2024 mod_wstunnel.so

Any suggestion, how to proceed?

Thank You

Usodimare