username creation errors

[its_joy]

Hello,

After restoring backups in whm when we try to change username we are getting error
Error:
==========================
Changing shell for domain.com
Shell not changed.
Error.. There is currently a configuration error in the Apache configuration file. User name change aborted.

Cpanel version is
WHM 11.15.0 cPanel 11.17.0-R19434
CENTOS Enterprise 4.6 i686 on standard - WHM X v3.1.0

Please help us to resolve the issue.

[Somethingblue]

This was resolved for us by changing the default memory assigned to cPanel in Tweak Settings to 256MB.

Log into WHM
Click Tweak Settings
Make sure this

The maximum memory a cPanel process can use before it is killed off (in megabytes). Values less than 128 megabytes can not be specified. A value of "0" will disable the memory limits.

is at least 256MB.