Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '1999275981' for key 'PRIMARY'

INSERT INTO phpbb_search_results (search_id, session_id, search_time, search_array) VALUES(1999275981, 'df0c3b2d443328b0250203efae177f02', 1631818447, 'a:7:{s:14:"search_results";s:164:"69902, 70364, 71060, 80404, 80967, 81606, 82056, 82092, 82525, 82674, 82918, 83089, 83093, 83101, 84007, 85016, 85040, 85110, 281513, 489266, 489267, 489268, 498134";s:17:"total_match_count";i:23;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