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 ('f3f839a0c255fc3a48806cdd62ec7250', -1, 1730419129, 1730419129, '12dea2fc', 18, 0, 0)

Line : 195
File : sessions.php