error while creating new hosting

An exception has been thrown in file
/var/www/imscp/gui/library/shared-functions.php at line 2529:

=================================================================

SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'straathonden.com' for key 'admin_name'

Query was:

INSERT INTO `admin` ( `admin_name`, `admin_pass`, `admin_type`, `domain_created`, `created_by`, `fname`, `lname`, `firm`, `zip`, `city`, `state`, `country`, `email`, `phone`, `fax`, `street1`, `street2`, `customer_id`, `gender`, `admin_status` ) VALUES ( ?, ?, 'user', unix_timestamp(), ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )

=================================================================

Debug backtrace:
---------------

File: /var/www/imscp/gui/public/reseller/user_add3.php at line 236
Function: exec_query()
File: /var/www/imscp/gui/public/reseller/user_add3.php at line 347
Function: reseller_addCustomer()

Additional information:
----------------------

Http User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0;
rv:11.0) like Gecko
Request Uri: /reseller/user_add3.php

suggestions?

when selecting reseller edit:

Dear admin,

An exception has been thrown in file

/var/www/imscp/gui/library/shared-functions.php at line
2529:

=================================================================

SQLSTATE[HY093]: Invalid parameter number: no parameters
were bound

Query was:

SELECT * FROM domain WHERE domain_id = ?

=================================================================

Debug backtrace:

---------------

File: /var/www/imscp/gui/library/shared-functions.php at
line 256

Function: exec_query()

File: /var/www/imscp/gui/library/admin-functions.php at
line 85

Function: shared_getCustomerProps()

File: /var/www/imscp/gui/public/admin/reseller_edit.php
at line 85

Function: generate_reseller_users_props()

File: /var/www/imscp/gui/public/admin/reseller_edit.php
at line 889

Function: admin_getData()

Additional information:

----------------------

Http User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64)

AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/39.0.2171.71

Safari/537.36

Request Uri: /admin/reseller_edit.php?edit_id=2