Could not insert search results

DEBUG MODE

SQL Error : 1062 Duplicate entry '504229361' for key 'PRIMARY'

INSERT INTO phpbb_search_results (search_id, session_id, search_time, search_array) VALUES(504229361, '307353548aea20add42ef29afb7236f4', 1714580042, 'a:7:{s:14:"search_results";s:126:"164592, 185858, 203557, 203558, 204143, 204147, 207418, 219770, 226703, 229718, 229719, 231566, 237612, 241786, 243256, 243293";s:17:"total_match_count";i:16;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