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 ('a100e00fb16d313ad0e9b80a2ac7859e', -1, 1713881701, 1713881701, '0389dae6', 3, 0, 0)

Line : 187
File : sessions.php