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 ('b79a0dbb71b31c973fd2c477ac0859b4', -1, 1713464374, 1713464374, '12da3d10', -4, 0, 0)

Line : 187
File : sessions.php