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 ('2bea3f3987a7a489b9ccf7f097f04738', -1, 1747502604, 1747502604, '0388119a', 2, 0, 0)

Line : 190
File : sessions.php