Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '186065176' for key 'PRIMARY'

INSERT INTO nuke_bbsearch_results (search_id, session_id, search_array) VALUES('186065176', 'b9e9bfc9d0c52689904e95cd955a20a9', 'a:7:{s:14:"search_results";s:22:"598565, 630384, 642698";s:17:"total_match_count";i:3;s:12:"split_search";N;s:7:"sort_by";i:0;s:8:"sort_dir";s:4:"DESC";s:12:"show_results";s:5:"posts";s:12:"return_chars";i:200;}')

Line : 568
File : /var/www/watchbus/public_html/modules/Forums/search.php