search error

[whitetiger0990]

Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '826406505' for key 1

INSERT INTO phpbb_search_results (search_id, session_id, search_array) VALUES(826406505, '83c084681ee8a40f6fac9bbddbbdd851', 'a:7:{s:14:"search_results";s:106:"2390, 2718, 3003, 3106, 3408, 3678, 3749, 3775, 3812, 4286, 4310, 5121, 5240, 5278, 5441, 5689, 5789, 6226";s:17:"total_match_count";i:18;s:12:"split_search";a:1:{i:0;s:3:"pie";}s:7:"sort_by";i:0;s:8:"sort_dir";s:4:"DESC";s:12:"show_results";s:6:"topics";s:12:"return_chars";i:200;}')

Line : 679
File : /home/qbnews/public_html/forum/search.php

I was searching for pie (just to show that there is an error)
and I set it to Search for all terms
this error appears after i submit.