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 ('e1b13939940678abfba9d7165bf0dac6', -1, 1730419838, 1730419838, '1276a66a', -1, 0, 0)

Line : 195
File : sessions.php