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 ('d3155d765a1df22aef00db91a3949487', -1, 1730415644, 1730415644, '0395f784', -1280, 0, 0)

Line : 195
File : sessions.php