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 ('42ebd6ac6238ee6f85404e8ee41c80e9', -1, 1714393206, 1714393206, '03929863', 3, 0)

Line : 158
File : sessions.php