phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c6464d8721c14af03fe8758f756f4f8f' 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 ('c6464d8721c14af03fe8758f756f4f8f', -1, 1714777477, 1714777477, '0395f320', 30, 0, 0)

Line : 187
File : sessions.php