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 ('96d0c601537f9b53f0a8096ece9032d9', -1, 1748388371, 1748388371, '12bfaebe', -9, 0, 0)

Line : 190
File : sessions.php