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 ('0cf5da7d369c11a683b300b514f63511', -1, 1713484983, 1713484983, '12d93c23', -8, 0, 0)

Line : 187
File : sessions.php