phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21c43a1bb1ca6f647d8f4d2a41d8be9f' 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 ('21c43a1bb1ca6f647d8f4d2a41d8be9f', -1, 1714319728, 1714319728, '1276a497', -9, 0, 0)

Line : 187
File : sessions.php