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 ('b437c0d768b72c93b12e8f6e3a786559', -1, 1749206463, 1749206463, 'd849d899', 2, 0, 0)

Line : 190
File : sessions.php