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 ('00e0a99b2d1a64a7a07903d2082e6954', -1, 1730418144, 1730418144, '1275ba7d', -1280, 0, 0)

Line : 195
File : sessions.php