Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '687033182' for key 'PRIMARY'

INSERT INTO phpbb_search_results (search_id, session_id, search_time, search_array) VALUES(687033182, '8b7e3413d1dabf5fd8990e88a43a152d', 1714001216, 'a:7:{s:14:"search_results";s:830:"340831, 340992, 344068, 344094, 344107, 344973, 344982, 345636, 345659, 345742, 345885, 346064, 346541, 346802, 347072, 347453, 347594, 347793, 347797, 349864, 349913, 354044, 355502, 358710, 359790, 360164, 360802, 360969, 389370, 389416, 389441, 389879, 389946, 390303, 390350, 390792, 391420, 391580, 391585, 392144, 392146, 402315, 402343, 402413, 403214, 404286, 404310, 404374, 404395, 404414, 404495, 419258, 419619, 422653, 422683, 423604, 423703, 424088, 424121, 424130, 424145, 424210, 424213, 424245, 424387, 424510, 430320, 430369, 432630, 434724, 434843, 435050, 435084, 435195, 439553, 439561, 441237, 441241, 441733, 442760, 444331, 444332, 444438, 444440, 444556, 444574, 444615, 446058, 446060, 446080, 446258, 448662, 457281, 467089, 468016, 469000, 476518, 476543, 500775, 502158, 504510, 504587, 506969, 508322";s:17:"total_match_count";i:104;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 : 781
File : search.php