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 ('121b81e948bd624c0614a42d74faa103', -1, 1726881666, 1726881666, '039025c4', -7, 0, 0)

Line : 189
File : sessions.php