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, session_admin) VALUES ('af538b3d06776c1f0366293f2504e4cb', -1, 1713481629, 1713481629, '0385985f', -1, 0, 0)

Line : 187
File : sessions.php