[SOLVED]404 errors on some admin pages -> mistake with global alias for system (/admin folder)

Hello
Sorry for my bad english, i'm french.
Since probably 2 updates of ispconfig, i have some 404 error in all the pages of "system" on ispconfig.
Somes infos :

Code:

IP-address (as per hostname): ***.***.***.***
[WARN] could not determine server's ip address by ifconfig
[INFO] OS version is Ubuntu 20.04.5 LTS

[INFO] uptime:  09:48:58 up 30 min,  1 user,  load average: 1,17, 1,23, 1,10

[INFO] memory:
              total        used        free      shared  buff/cache   available
Mem:           15Gi       2,6Gi        10Gi        31Mi       2,7Gi        12Gi
Swap:          51Gi          0B        51Gi

[INFO] systemd failed services status:
  UNIT                      LOAD   ACTIVE SUB    DESCRIPTION
● quotaon.service           loaded failed failed Enable File System Quotas
● snap.lxd.activate.service loaded failed failed Service for snap application lxd.activate

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

2 loaded units listed.

[INFO] ISPConfig is installed.

##### ISPCONFIG #####
ISPConfig version is 3.2.9p1


##### VERSION CHECK #####

[INFO] php (cli) version is 7.4.3-4ubuntu2.17
[INFO] php-cgi (used for cgi php in default vhost!) is version 7.4.3

##### PORT CHECK #####


##### MAIL SERVER CHECK #####


##### RUNNING SERVER PROCESSES #####

[INFO] I found the following web server(s):
        Apache 2 (PID 355442)
[INFO] I found the following mail server(s):
        Postfix (PID 239465)
[INFO] I found the following pop3 server(s):
        Dovecot (PID 359332)
[INFO] I found the following imap server(s):
        Dovecot (PID 359332)
[INFO] I found the following ftp server(s):
        PureFTP (PID 239878)

##### LISTENING PORTS #####
(only           ()
Local           (Address)
[localhost]:11211               (1105/memcached)
[localhost]:10023               (1422/postgrey)
[localhost]:10025               (239465/master)
[localhost]:10024               (239588/amavisd-new)
[localhost]:10027               (239465/master)
[localhost]:10026               (239588/amavisd-new)
[localhost]:953         (239895/named)
[localhost]:53          (239895/named)
[localhost]:8125                (1751/netdata)
[anywhere]:19999                (1751/netdata)
***.***.***.***:445             (1384/smbd)
***.***.***.***:53              (239895/named)
***.***.***.***:53              (916/systemd-resolve)
***.***.***.***:53              (239895/named)
[anywhere]:22           (1226/sshd:)
[anywhere]:21           (239878/pure-ftpd)
[anywhere]:25           (239465/master)
[anywhere]:110          (359332/dovecot)
[anywhere]:111          (1/init)
[anywhere]:143          (359332/dovecot)
[anywhere]:465          (239465/master)
[anywhere]:587          (239465/master)
[anywhere]:995          (359332/dovecot)
[anywhere]:993          (359332/dovecot)
2a01:e0a:d7:1a90:52:445         (1384/smbd)
2a01:e0a:d7:1a90:52e:53         (239895/named)
*:*:*:*::*:10026                (239588/amavisd-new)
*:*:*:*::*:8080         (355442/apache2)
*:*:*:*::*:8081         (355442/apache2)
*:*:*:*::*:10024                (239588/amavisd-new)
*:*:*:*::*:53           (239895/named)
*:*:*:*::*33e1:77d6:4687:53             (239895/named)
*:*:*:*::*52eb:f6ff:fe54:53             (239895/named)
*:*:*:*::*53            (239895/named)
*:*:*:*::*:953          (239895/named)
*:*:*:*::*:3128         (1397/(squid-1))
*:*:*:*::*:3129         (1397/(squid-1))
*:*:*:*::*:3306         (238966/mysqld)
[localhost]9999         (1751/netdata)
*:*:*:*::*:22           (1226/sshd:)
*:*:*:*::*:21           (239878/pure-ftpd)
*:*:*:*::*:25           (239465/master)
[localhost]10           (359332/dovecot)
[localhost]11           (1/init)
*:*:*:*::*:80           (355442/apache2)
[localhost]43           (359332/dovecot)
*:*:*:*::*:443          (355442/apache2)
*:*:*:*::*:465          (239465/master)
*:*:*:*::*:587          (239465/master)
*:*:*:*::*:9090         (1/init)
*:*:*:*::*:995          (359332/dovecot)
*:*:*:*::*:993          (359332/dovecot)




##### IPTABLES #####




##### LET'S ENCRYPT #####
Certbot is installed in /usr/bin/letsencrypt

I'm on Ubuntu 20.04, php 7.4, and 8.1 (7.4 is default one).

My problem : When i open "System" on isp web interface, i've got nothing, and in the console of chrome, i have 404 error :

Code:

jquery.min.js:2          GET https://serveur.caiveau.fr:8080/admin/server_list.php 404 (Not Found)

This page "/admin/server_list.php" is existing in "/usr/local/ispconfig/interface/web/admin"
I have the problem with all the possible choices in "system".
I need to change defaut php version to 8.1, then i can't do it with ispconfig :'(
Could you help me ?
Do you need others informations to help me ?

Thank's a lot

 

Ho !
A well done !
I found a vhost for Pihole :

Code:

<IfModule alias_module>
    Alias /admin /var/www/html/admin
    <Directory "/var/www/html/admin">

Working fine now
THAAANNNNKKKK's !!