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 ('7c60d85e7ee66e811b7ffc254eb944fa', -1, 1714800238, 1714800238, '12bcf152', 13, 0)

Line : 158
File : sessions.php