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 ('8b1cd881e066ac85141c6bc6f263f07b', -1, 1714616946, 1714616946, '03913f88', 3, 0)

Line : 158
File : sessions.php