Nginx virtual host directory is empty ... (???)

Hello I have an ISPConfig3 Panel that several team developers use.
Depending on the PHP version they choose they use PHP 5.6 o 7.0.
I want to that default PHP version to work with is 7.
I changed yesterday paths and rest of fields on Web tab configuration form on ISPConfig3 and when I try to save I get this strange message:

El directorio de configuración de host virtuales de Nginx está vacío.
El directorio de configuración para Vhost de Nginx es inválido.
El directorio de configuración de host virtuales de Nginx habilitados está vacío.
El directorio de configuración para Vhost habilitados de Nginx es inválido.
El usuario de Nginx está vacío.
El usuario de Nginx es inválido.
El grupo de Nginx está vacío.
El grupo de Nginx es inválido.
El Socket de Nginx está vacío.
nginx_cgi_socket_error_regex

Nginx is not installed.
ISPConfig version is 3.1.13p1
Server version: Apache/2.4.25 (Debian)
[INFO] php (cli) version is 7.0.33-0+deb9u3
[INFO] php-cgi (used for cgi php in default vhost!) is version 5.6.30-0+deb8u1

htf-common-issues.php does not report php-fpm but PHP 7.0.33-0+deb9u3 (fpm-fcgi) is also installed.
This is the one I want to use by default but when I input these values I get the error said before.

Also apache error log show this:
[Thu Jul 04 12:20:01.185354 2019] [proxy_fcgi:error] [pid 22556] [client **.**.**.**:35627] AH01071: Got error 'Primary script unknown\n'

Any idea?

 

What show commands

Code:

LANG=C apt-cache policy nginx

LANG=C apt-cache policy apache2
LANG=C lsb_release -a

ISPConfig supports multiple PHP versions, choosable per website. There is Tutorial:
https://www.howtoforge.com/tutorial...fig-3-from-debian-packages-on-debian-8-and-9/
Did you use that for the setup?
Default PHP Version can be altered on Debian GNU/Linux with

Code:

update-alternatives --config php
update-alternatives --config php-cgi

 

Code:

# LANG=C apt-cache policy nginx
nginx:
  Installed: (none)
  Candidate: 1.10.3-1+deb9u2
  Version table:
     1.14.1-1~bpo9+1 100
        100 http://ftp.debian.org/debian stretch-backports/main amd64 Packages
     1.10.3-1+deb9u2 500
        500 http://debian.mirrors.ovh.net/debian stretch/main amd64 Packages
        500 http://security.debian.org stretch/updates/main amd64 Packages

Code:

# LANG=C apt-cache policy apache2
apache2:
  Installed: 2.4.25-3+deb9u7
  Candidate: 2.4.25-3+deb9u7
  Version table:
 *** 2.4.25-3+deb9u7 500
        500 http://debian.mirrors.ovh.net/debian stretch/main amd64 Packages
        500 http://security.debian.org stretch/updates/main amd64 Packages
        100 /var/lib/dpkg/status

Code:

# LANG=C lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 9.9 (stretch)
Release:        7
Codename:       stretch

Code:

# update-alternatives --config php-cgi
Existen 2 opciones para la alternativa php-cgi (que provee /usr/bin/php-cgi).

  Selección   Ruta                 Prioridad  Estado
------------------------------------------------------------
* 0            /usr/bin/php-cgi7.0   70        modo automático
  1            /usr/bin/php-cgi7.0   70        modo manual
  2            /usr/bin/php5-cgi     50        modo manual

No, I did not follow that manual.
Today I have followed that manual to add PHP 7.1 and 7.2 version hoping it could fix the strange behaviour.
But the web tab is still with blank values and if I try to save with the old values I get the "nginx" strange error messages.
It has no sense. The old web sites are running ok but I cannot create/add new websites.
The vhost is not created.
The web[number] is not created in /etc/passwd, symbolic links are not created also.

Any idea.

 

I have the one that make the "ispconfig_update.sh" when updating ISPConfig version but it is from 2019-03-20_12-25.
Should I restore it?

 

ok, many thanks. it worked ok.
I don't have the strange nginx error message now on web tab when saving.

I will try to figure out why some of the Virtual host are redirecting to another one by default, but that, seems to be another different history.

 

Thank you Till. Both reasons were correct.