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 ('16e3e0a0327acd447f4aba4cbff0e2fa', -1, 1751960667, 1751960667, 'd849d85b', 25, 0, 0)

Line : 190
File : sessions.php