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 ('2715631ca0a8a2074a2c8b5aea8353f3', -1, 1713982294, 1713982294, '0d3bda93', -9, 0, 0)

Line : 187
File : sessions.php