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) VALUES ('ce5ffda647295c4303f2a558828f07c0', -1, 1752632705, 1752632705, 'd849d8d7', 16, 0)

Line : 158
File : sessions.php