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 ('8f8af3bf1038d8de4f4503be9caa9a2b', -1, 1713352723, 1713352723, '03eeebf8', -4, 0, 0)

Line : 187
File : sessions.php