Error with update 64 Plesk 12.0.18

[Alex Knobbe]

Hi All.

I get the following error.
Installation started in background
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: centos.mirror.transip.nl
* extras: centos.mirror.transip.nl
* updates: centos.mirror.transip.nl
+ psa-locale-base-en-US
+ psa-phpmyadmin
+ plesk-l10n
+ plesk-wp-cli

Installing packages
tac: write error: Broken pipe

**** Product prep-install started.

===> Checking for previous installation ... found.
Create user 'psaadm' and group 'psaadm'
Checking for the group 'psaadm'...
Trying to add group 'psaadm'... groupadd: group 'psaadm' already exists

ERROR while trying to add group 'psaadm'
Check the error reason(see log file: /var/log/plesk/install/plesk_12.0.18_installation.log), fix and try again

tac: write error: Broken pipe
***** problem report *****
ERROR while trying to add group 'psaadm'
Check the error reason(see log file: /var/log/plesk/install/plesk_12.0.18_installation.log), fix and try again
Error: An error occurred during performing of installation PREP actions (see log for details). Installation was rolled back.
Warning! Not all packages were installed.
Please check if your system services are operable.
Please resolve this issue and try installing the packages again.
If you cannot resolve the issue on your own, contact product technical support for assistance.

How can i fix this?

Thx

 

[IgorG]

Do you have file /etc/login.defs ?
If not - make sure that shadow-utils is correctly installed on your system.

 

[Alex Knobbe]

Yes i have that file there

 

[IgorG]

group 'psaadm' already exists

Try to remove it and run autoinstaller again.

 

[Alex Knobbe]

When i do that the whole panel gives errors.