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 ('97a64bc343fa56365b81815d773f3742', -1, 1714719186, 1714719186, '03864dc3', 23, 0)

Line : 158
File : sessions.php