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 ('cd13dc1b579dbbde1d1e99411b7895d2', -1, 1713504733, 1713504733, '03912ffd', -4, 0, 0)

Line : 187
File : sessions.php