Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '804576734' for key 'PRIMARY'

INSERT INTO nuke_bbsearch_results (search_id, session_id, search_array) VALUES('804576734', 'b52a3b2cfd44ad2c8d7c3c6611fee4f1', 'a:7:{s:14:"search_results";s:574:"1022924, 1012603, 1012611, 1012773, 1013112, 1013397, 1013625, 1013696, 1014418, 1014653, 1016140, 1016163, 1016446, 1016495, 1016510, 1016543, 1018696, 1018919, 1019470, 1022641, 1023027, 1023718, 1023850, 1024305, 1024914, 1026349, 1030379, 1030626, 1030677, 1030681, 1031733, 1040747, 1044079, 1097870, 1097979, 1107187, 1107197, 1108043, 1111310, 1127569, 1127920, 1129501, 1129512, 1156853, 1156903, 1156929, 1156932, 1156940, 1156963, 1157005, 1163570, 1164550, 1164596, 1169247, 1169799, 1186146, 1198262, 1199645, 1199687, 1216157, 1226828, 1237608, 1237618, 1240152";s:17:"total_match_count";i:64;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