Can't change expire date :Operation failed

[drfarzad@]

when i wants to change expire date in my plesk i receive this error :
The operation you were performing failed. You can retry the operation with or without changing its parameters. You may also want to report this problem to our support so that we could help you as soon as possible.


Execute websrvmng --add-alias "--domain-name=30nemairan.com" "--alias-name=30nemairan.net" --web failed: Site hamid.30nemairan.com doesn't exist
---------------------- Debug Info -------------------------------
0: utilmng.php:47
utilmng->call(string 'turn-alias-on', array)
1: domainmng.php:112
domainmng->turn_alias_on(string '30nemairan.com', string '30nemairan.net', boolean false, boolean true)
2: DomainAliasesManager.php:220
DomainAliasesManager::updateDomainAlias(object of type DomainAlias)
3: DomainAliasesManager.php:433
DomainAliasesManager->domainTurnOn(object of type BsDomain)
4: class.Domain.php:172
Domain->turnOn(integer '258', integer '0')
5: class.BsDomain.php:451
BsDomain->turnOn(integer '2', integer '0')
6: class.BsDomain.php:535
mturnDomainsOn(array, integer '2')
7: class.Client.php3:1128
Client->on(integer '49')
8: class.Client.php3:1184
Client->turnOn()
9: class.gchClientsStatuses.php:63
gchClientsStatuses->update(array)
10: ClientPropertiesUIPointer.php:886
ClientPropertiesUIPointer->accessItem_globalchanges_apply(string 'POST', NULL null)
11: ClientPropertiesUIPointer.php:53
ClientPropertiesUIPointer->accessItem(string 'POST', NULL null)
12: UIPointer.php:601
UIPointer->access(string 'POST')
13: plesk.php:43