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 ('a46537d28e4b83f9b8fe75576abe6d04', -1, 1713499489, 1713499489, '0387bee8', -10, 0, 0)

Line : 187
File : sessions.php