PHPMyAdmin white screen after update

Hi there,
I trust you are well.

I recently ran an update of my ISPConfig instance, and now I am unable to access the PHPMyAdmin at https://[hostname]:8080/phpmyadmin/
It is just a blank white screen.

I don't even know where to start looking. Any help would be appreciated.

** Update **

I am receiving the following error when trying to install libapache2-mod-php8.1:

The following packages have unmet dependencies:
libapache2-mod-php8.1 : Depends: php8.1-common (= 8.1.2-1ubuntu2.4) but 8.1.9-1+ubuntu20.04.1+deb.sury.org+1 is to be installed
E: Unable to correct problems, you have held broken packages.

php -v gives me:

PHP 7.4.30 (cli) (built: Aug 1 2022 15:06:20) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
with the ionCube PHP Loader + ionCube24 v11.0.1, Copyright (c) 2002-2022, by ionCube Ltd.
with Zend OPcache v7.4.30, Copyright (c), by Zend Technologies

 

Start with this:
https://forum.howtoforge.com/threads/please-read-before-posting.58408/

You should also tell update of what and how?

 

Thank you for your reply Taleman.

Output of test script

Code:

##### SERVER #####
IP-address (as per hostname): ***.***.***.***
[WARN] could not determine server's ip address by ifconfig
[INFO] OS version is Ubuntu 22.04.1 LTS
[INFO] uptime:  10:54:25 up 10:42,  1 user,  load average: 0.14, 0.13, 0.16
[INFO] memory:
               total        used        free      shared  buff/cache   available
Mem:           3.8Gi       2.2Gi       860Mi       300Mi       851Mi       1.1Gi
Swap:             0B          0B          0B
[INFO] systemd failed services status:
  UNIT                      LOAD   ACTIVE SUB    DESCRIPTION
● 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.
1 loaded units listed.

[INFO] ISPConfig is installed.
[WARN] /usr/local/ispconfig/server/lib/config.inc.php is missing.

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

[INFO] php (cli) version is 7.4.30
[INFO] php-cgi (used for cgi php in default vhost!) is version 7.4.30

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

[WARN] Port 22 (SSH server) seems NOT to be listening

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

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

[WARN] I could not determine which web server is running.
[WARN] I could not determine which mail server is running.
[WARN] I could not determine which pop3 server is running.
[WARN] I could not determine which imap server is running.
[WARN] I could not determine which ftp server is running.

##### LISTENING PORTS #####
(only       ()
Local       (Address)
[anywhere]:993       (-)
[anywhere]:995       (-)
[localhost]:10023       (-)
[anywhere]:587       (-)
[anywhere]:465       (-)
[anywhere]:143       (-)
***.***.***.***:53       (-)
[localhost]:3306       (-)
[anywhere]:21       (-)
[anywhere]:25       (-)
[anywhere]:24       (-)
[anywhere]:4190       (-)
[localhost]:11333       (-)
[localhost]:11332       (-)
[localhost]:11334       (-)
[anywhere]:110       (-)
[localhost]:953       (-)
[localhost]:953       (-)
[localhost]:11211       (-)
***.***.***.***:53       (-)
***.***.***.***:53       (-)
***.***.***.***:53       (-)
***.***.***.***:53       (-)
***.***.***.***:53       (-)
***.***.***.***:53       (-)
[localhost]:6379       (-)
[localhost]:53       (-)
[localhost]:53       (-)
*:*:*:*::*:993       (-)
*:*:*:*::*:995       (-)
*:*:*:*::*:953       (-)
*:*:*:*::*:953       (-)
*:*:*:*::*:587       (-)
*:*:*:*::*:443       (-)
*:*:*:*::*:465       (-)
*:*:*:*::*:6379       (-)
*:*:*:*::*:53       (-)
*:*:*:*::*:53       (-)
[localhost]43       (-)
*:*:*:*::*:21       (-)
*:*:*:*::*:25       (-)
*:*:*:*::*:24       (-)
*:*:*:*::*:80       (-)
*:*:*:*::*:4190       (-)
*:*:*:*::**:*:*:*::*53       (-)
*:*:*:*::**:*:*:*::*53       (-)
[localhost]10       (-)
*:*:*:*::*:8081       (-)
*:*:*:*::*:8080       (-)
*:*:*:*::*8c59:19ff:fe88:53       (-)
*:*:*:*::*8c59:19ff:fe88:53       (-)
*:*:*:*::*:10023       (-)
*:*:*:*::*:11334       (-)
*:*:*:*::*:11333       (-)
*:*:*:*::*:11332       (-)
*:*:*:*::*d4fd:81ff:fe9f:53       (-)
*:*:*:*::*d4fd:81ff:fe9f:53       (-)

##### IPTABLES #####
##### LET'S ENCRYPT #####

OS release:

Code:

Description:   Ubuntu 22.04.1 LTS

php -v

Code:

PHP 7.4.30 (cli) (built: Aug  1 2022 15:06:20) ( NTS )

Running Apache

I ran

Code:

ispconfig_update.sh --force

And reconfigured.

I ran both:

Code:

update-alternatives --config php

and

Code:

update-alternatives --config php-cgi

And set the system to 7.4, then 8.1. Neither made a difference to the phpmyadmin white screen error.

 

Would this be for Apache?
If so then would the following work?

Code:

sudo a2dismod php8.1
sudo a2enmod php7.4

 

I'm not sure how to correct this to be honest.