Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '897585898' for key 'PRIMARY'

INSERT INTO phpbb_search_results (search_id, session_id, search_time, search_array) VALUES(897585898, '57fbbacb40a316ba7e83c159ab8b0f69', 1792034857, 'a:7:{s:14:"search_results";s:438:"601243, 607126, 607296, 607297, 607617, 607619, 608110, 608112, 608113, 608742, 608907, 609321, 609499, 609604, 609884, 611195, 611529, 611739, 611962, 611963, 612052, 613138, 613371, 613629, 613874, 614243, 614718, 615336, 617463, 617476, 617508, 618368, 619084, 619330, 620718, 621054, 621727, 621871, 621890, 622084, 622435, 622720, 623018, 623019, 623420, 623600, 623866, 624057, 625035, 625143, 625295, 626071, 626389, 626889, 627059";s:17:"total_match_count";i:55;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