Error changing e-mail account password

[tega]

Got a new issue today, but on a different server I have running with Kloxo MR, tried to change a password an e-mail account on the panel, it shows "password successfully updated" but the password doesn't change.

I checked the logs on /usr/local/lxlabs/kloxo/log/user_cmd and I found this error

Code: [Select]

18:16 Feb/24/2016: () 7797 '/home/vpopmail/bin/vpasswd'  'paulo.vital@mydomain.com' 'PasswordIWant' PHP Warning:  PHP Startup: Unable to load dynamic library '/opt/php54s/usr/lib/php/modules/wddx.so' - /opt/php54s/usr/lib/php/modules/wddx.so: undefined symbol: php_XML_Parse in Unknown on line 0
Error: Illegal username

Any ideas?