phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e96afd1da21ee784b1d79111a9b71cad', -1, 1715264715, 1715264715, '03864c33', 8, 0, 0)

Line : 189
File : sessions.php