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 ('04715ee4c99fc2642c72c50e99d9b844', -1, 1713577533, 1713577533, '03912ffd', -10, 0, 0)

Line : 187
File : sessions.php