Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '1888564399' for key 'PRIMARY'

INSERT INTO phpbb_search_results (search_id, session_id, search_time, search_array) VALUES(1888564399, 'a695304c7de527494e8ccb4d64b13289', 1714206911, 'a:7:{s:14:"search_results";s:22:"6100, 6101, 6344, 6922";s:17:"total_match_count";i:4;s:12:"split_search";N;s:7:"sort_by";i:5;s:8:"sort_dir";s:4:"DESC";s:12:"show_results";s:6:"topics";s:12:"return_chars";i:200;}')

Line : 830
File : search.php