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 ('6c7c2e3397785a8ab89d9bf07bcda2d3', -1, 1713489699, 1713489699, '0387b623', -11, 0, 0)

Line : 187
File : sessions.php