Site import results in the “overflow” error
This is not a Parallels Pro Control Panel-related issue, but a Python bug. 
Resolution : http://bugs.python.org/issue1215928
Please refer the above url for more detailed information and apply the provided solution to your system.
Reference : http://parallels.com
				 
								
			 	
					
				
				
					The GNU long parameters
You can combine GNU long parameters with either Unix- or BSD-style parameters to really customize your display. One cool feature of GNU long parameters with the –forest parameter. It displays the hierarchical process information, but using ASCII characters to draw cute charts:
$ 
ps -ef –forest |grep apache2
root      3420     1  2 08:55 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  3428  3420  0 08:55 ?        00:00:00  \_ /usr/sbin/apache2 -k start
www-data  3431  3420  0 08:55 ?        00:00:00  \_ /usr/sbin/apache2 -k start
www-data  3432  3420  0 08:55 ?        00:00:00  \_ /usr/sbin/apache2 -k start
www-data  3433  3420  0 08:55 ?        00:00:00  \_ /usr/sbin/apache2 -k start
www-data  3434  3420  0 08:55 ?        00:00:00  \_ /usr/sbin/apache2 -k start