Resolved I can't login Horde page, reload page without errors

[rereus]

I've installed nginx recently.
Horde don't list any error, only returns to login page.
When I change options in login page returns to defaults.
I'm using Plesk 12.5.30 #43, courier-imap4.16.1, httpd2.2.3, nginx1.11.1, php5.6.24, psa-horde5.2.6, postfix2.11.5, SO ‪Red Hat Enterprise Linux Server 5.11.
The horde test.php shows:
XML Parser support: No
The libxml version is too old. libxml 2.7 or later is required.
I've libxml2-2.6.26 and cannot update.
I think xml is not the problem, but...
I thank you your help

 

[rereus]

psa-horde.log have 0 bytes.
Not other changes from last time Horde works fine, some days ago...

 

[rereus]

I've tried to stop nginx. It don't works

 

[IgorG]

Try to build and update libxml according to instruction from http://serverfault.com/questions/266927/install-libxml2-2-7-x-on-centos-5-x
Also, following KB article may be useful - https://kb.plesk.com/en/6781

 

[rereus]

I've tried to build and install libxml2 but
the version at phpinfo() don't change.
I've installed libxml2-2.7.8-1 and phpinfo() shows:
libxml2 Version 2.6.26

With the second article I find :

drwxrwx--- 2 root apache 61440 jul 21 07:49 /var/lib/php/session/

NOT :
drwx-wx-wt 2 root root 4096 Mar 24 2009 /var/lib/php/session/

I do :
chmod 1733 /var/lib/php/session

as the article says and the problem is solved.
Thank you very much.

Try to build and update libxml according to instruction from http://serverfault.com/questions/266927/install-libxml2-2-7-x-on-centos-5-x
Also, following KB article may be useful - https://kb.plesk.com/en/6781