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 ('735d7c5ab8e4925b17e83e4d5c87539b', -1, 1709230048, 1709230048, '03ef4c19', -4, 0, 0)

Line : 187
File : sessions.php