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 ('4669d7fb1f377145a2d0688d0d8dc7ea', -1, 1713539254, 1713539254, '1274efc3', -8, 0, 0)

Line : 187
File : sessions.php