Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '1644124441' for key 'PRIMARY'

INSERT INTO phpbb_search_results (search_id, session_id, search_time, search_array) VALUES(1644124441, '5bce5c99f8c0c9f9066226aa04ca52ff', 1714275297, 'a:7:{s:14:"search_results";s:246:"235433, 235435, 235440, 235443, 235446, 235447, 235449, 235455, 235456, 235457, 235459, 235563, 235564, 236798, 236800, 237007, 237064, 237176, 237427, 237832, 237834, 239318, 239804, 240020, 240062, 240176, 240690, 240753, 240754, 241870, 242147";s:17:"total_match_count";i:31;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 : 706
File : search.php