Problems admin_edit.php

[Blixten]

Hi I have a problem inside the admin section of the page.
When I want to edit domain, I get up this is a message of something that is wrong code on the side or are they a bug or maybe they will be as ..
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admin_edit.php
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Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. - Query: SELECT `admin_id`, `created_by`, `admin_type` FROM `admin` WHERE `admin_id` = ? ;
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What can I do to correct this little problem

Sorry Bad eng