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 ('3df92708fceace4b4d53ce7826e1d5cf', -1, 1714685487, 1714685487, '1274efc3', 20, 0)

Line : 158
File : sessions.php