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 ('1a33189a6405c5173910029ee1b6e99b', -1, 1713559164, 1713559164, '03119659', -6, 0, 0)

Line : 187
File : sessions.php