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 ('4cf26e846af76486506bbb3e19bcc422', -1, 1730421189, 1730421189, '0393243d', -1280, 0, 0)

Line : 195
File : sessions.php