Zend_Db_Statement_Mysqli_Exception: Mysqli statement execute error : Duplicate entry...

I've only just installed and done the import this week and I am getting this error in my server log:

Code:

Zend_Db_Statement_Mysqli_Exception: Mysqli statement execute error : Duplicate entry '385bd7c80cc5ef71de32faa65ad57e71' for key 'url_hash' - library/Zend/Db/Statement/Mysqli.php:214
Generated By: Unknown Account, Today at 4:16 PM
Stack Trace
#0 /home/***/public_html/forums/library/Zend/Db/Statement.php(297): Zend_Db_Statement_Mysqli->_execute(Array)
#1......

Zend_Db_Statement_Mysqli_Exception: Mysqli statement execute error : Duplicate entry...

source https://xfmaster.com/threads/zend_db_statement_mysqli_exception-mysqli-statement-execute-error-duplicate-entry.15513/