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 ('f47fa5cf154b71149a8d90d8da370541', -1, 1713962309, 1713962309, '03ef5b05', -8, 0, 0)

Line : 187
File : sessions.php