phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('0ab5b4f2691e5707bcdb3ffd2e0d8a79', -1, 1714613040, 1714613040, '12d8bea7', 6, 0)

Line : 158
File : sessions.php