phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21b315108716b7a3153f3e0de79b63f7' 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 ('21b315108716b7a3153f3e0de79b63f7', -1, 1716243761, 1716243761, 'c0a80201', 16, 0, 0)

Line : 187
File : sessions.php