phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '51121f916c1811868ebde9dce7384e8e' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('51121f916c1811868ebde9dce7384e8e', -1, 1714389943, 1714389943, '12bfef7b', -9, 0, 0)

Line : 187
File : sessions.php