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 ('9dbf1f6affb5bc41c459f93d0dd68923', -1, 1747873457, 1747873457, '12da08ed', 5, 0, 0)

Line : 190
File : sessions.php