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 ('7168fb1ac0651fde7b63eb24e3135d70', -1, 1714341176, 1714341176, '12e1d15f', 19, 0)

Line : 158
File : sessions.php