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 ('046d0ac08e7ec17d5fb58df31f0b4494', -1, 1714772511, 1714772511, '038113fb', -1, 0, 0)

Line : 187
File : sessions.php