phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c21c60aa684a9e5dc15f09a6b1b907dd' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c21c60aa684a9e5dc15f09a6b1b907dd', -1, 1714343418, 1714343418, '12de7794', -4, 0, 0)

Line : 187
File : sessions.php