What's wrong with my certificates?

$ ls -la /etc/apache2/sites-enabled/
totale 16
drwxr-xr-x  2 root root 4096 ott  3 23:14 .
drwxr-xr-x 10 root root 4096 ott  3 23:15 ..
lrwxrwxrwx  1 root root   44 ott  3 20:50 benvenuto.cathopedia.conf -> ../sites-available/benvenuto.cathopedia.conf
lrwxrwxrwx  1 root root   43 ott  3 20:50 bibbianuova.qumran2.conf -> ../sites-available/bibbianuova.qumran2.conf
lrwxrwxrwx  1 root root   60 ott  3 20:51 bibbianuova.qumran2-le-ssl.conf -> /etc/apache2/sites-available/bibbianuova.qumran2-le-ssl.conf
lrwxrwxrwx  1 root root   38 ott  3 20:50 bibbia.qumran2.conf -> ../sites-available/bibbia.qumran2.conf
lrwxrwxrwx  1 root root   36 ott  3 20:51 blog.qumran2.conf -> ../sites-available/blog.qumran2.conf
lrwxrwxrwx  1 root root   57 set 30 17:20 blog.qumran2.net-le-ssl.conf -> /etc/apache2/sites-available/blog.qumran2.net-le-ssl.conf
lrwxrwxrwx  1 root root   37 ott  3 20:51 cathopedia_it.conf -> ../sites-available/cathopedia_it.conf
lrwxrwxrwx  1 root root   54 set 30 17:20 cathopedia_it-le-ssl.conf -> /etc/apache2/sites-available/cathopedia_it-le-ssl.conf
lrwxrwxrwx  1 root root   39 ott  3 20:51 cathopedia_next -> ../sites-available/cathopedia_next.conf
lrwxrwxrwx  1 root root   38 set 30 23:01 cathopedia.org.conf -> ../sites-available/cathopedia.org.conf
lrwxrwxrwx  1 root root   45 set 30 23:01 cathopedia.org-le-ssl.conf -> ../sites-available/cathopedia.org-le-ssl.conf
lrwxrwxrwx  1 root root   41 ott  3 20:52 chiesamissionaria -> ../sites-available/chiesamissionaria.conf
lrwxrwxrwx  1 root root   58 set 30 17:20 chiesamissionaria-le-ssl.conf -> /etc/apache2/sites-available/chiesamissionaria-le-ssl.conf
lrwxrwxrwx  1 root root   51 ott  3 20:52 guaricano.chiesamissionaria.conf -> ../sites-available/guaricano.chiesamissionaria.conf
lrwxrwxrwx  1 root root   38 ott  3 20:52 infonuoviculti.conf -> ../sites-available/infonuoviculti.conf
lrwxrwxrwx  1 root root   36 ott  3 20:52 movimentofac.conf -> ../sites-available/movimentofac.conf
lrwxrwxrwx  1 root root   49 ott  3 20:52 palmarophotofloat.qumran2.conf -> ../sites-available/palmarophotofloat.qumran2.conf
lrwxrwxrwx  1 root root   42 ott  2 23:03 parrocchialagaccio.conf -> ../sites-available/parrocchialagaccio.conf
lrwxrwxrwx  1 root root   31 ott  3 20:53 phpinfo.conf -> ../sites-available/phpinfo.conf
lrwxrwxrwx  1 root root   31 feb 24  2017 phplist.conf -> ../sites-available/phplist.conf
lrwxrwxrwx  1 root root   49 ott  3 20:53 pretimyphotoshare.qumran2.conf -> ../sites-available/pretimyphotoshare.qumran2.conf
lrwxrwxrwx  1 root root   66 ott  3 20:53 pretimyphotoshare.qumran2-le-ssl.conf -> /etc/apache2/sites-available/pretimyphotoshare.qumran2-le-ssl.conf
lrwxrwxrwx  1 root root   35 ott  3 20:53 pretionline.it -> ../sites-available/pretionline.conf
lrwxrwxrwx  1 root root   32 apr  3  2017 proposta.conf -> ../sites-available/proposta.conf
lrwxrwxrwx  1 root root   38 lug 13 11:27 propostagenova.conf -> ../sites-available/propostagenova.conf
lrwxrwxrwx  1 root root   31 ott  3 20:54 qumran2.conf -> ../sites-available/qumran2.conf
lrwxrwxrwx  1 root root   41 ott  3 20:54 sanmartinodalbaro.conf -> ../sites-available/sanmartinodalbaro.conf
lrwxrwxrwx  1 root root   37 ott  3 20:54 weewx.qumran2.conf -> ../sites-available/weewx.qumran2.conf
lrwxrwxrwx  1 root root   54 ott  3 20:54 weewx.qumran2-le-ssl.conf -> /etc/apache2/sites-available/weewx.qumran2-le-ssl.conf
lrwxrwxrwx  1 root root   42 ago 16  2012 www.sguardocattolico.it -> ../sites-available/www.sguardocattolico.it
lrwxrwxrwx  1 root root   30 feb 20  2017 zzz-default -> ../sites-available/zzz-default
lrwxrwxrwx  1 root root   42 ott  3 23:14 zzz-default-le-ssl.conf -> ../sites-available/zzz-default-le-ssl.conf


$ sudo apache2ctl -t -D DUMP_MODULES
Loaded Modules:
 core_module (static)
 so_module (static)
 watchdog_module (static)
 http_module (static)
 log_config_module (static)
 logio_module (static)
 version_module (static)
 unixd_module (static)
 access_compat_module (shared)
 actions_module (shared)
 alias_module (shared)
 auth_basic_module (shared)
 auth_digest_module (shared)
 authn_core_module (shared)
 authn_file_module (shared)
 authz_core_module (shared)
 authz_groupfile_module (shared)
 authz_host_module (shared)
 authz_user_module (shared)
 autoindex_module (shared)
 cgi_module (shared)
 dav_module (shared)
 dav_fs_module (shared)
 deflate_module (shared)
 dir_module (shared)
 dnssd_module (shared)
 env_module (shared)
 expires_module (shared)
 fcgid_module (shared)
 filter_module (shared)
 geoip_module (shared)
 headers_module (shared)
 include_module (shared)
 info_module (shared)
 mime_module (shared)
 mpm_prefork_module (shared)
 negotiation_module (shared)
 perl_module (shared)
 php5_module (shared)
 reqtimeout_module (shared)
 rewrite_module (shared)
 rpaf_module (shared)
 security2_module (shared)
 setenvif_module (shared)
 socache_shmcb_module (shared)
 ssl_module (shared)
 status_module (shared)
 suexec_module (shared)
 unique_id_module (shared)