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 ('a477d20f5c9c7b8eedce4754266207dd', -1, 1748776495, 1748776495, '03946a2e', -9, 0, 0)

Line : 190
File : sessions.php