Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '1228660929' for key 'PRIMARY'

INSERT INTO v2phpbb_search_results (search_id, session_id, search_time, search_array) VALUES(1228660929, '0fa5ed6f5699fa8d0fde00119b14185f', 1794470252, 'a:7:{s:14:"search_results";s:332:"4505, 484027, 611201, 612840, 693410, 678034, 681557, 682951, 683079, 683391, 685523, 685874, 685928, 686766, 686775, 690417, 692314, 692382, 692485, 693368, 700172, 700795, 701716, 709386, 709402, 714776, 715993, 715999, 726525, 726562, 728887, 735119, 742899, 747889, 751147, 778126, 780535, 799598, 818220, 820494, 834537, 834623";s:17:"total_match_count";i:42;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 : 741
File : search.php