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 ('fa7e5af26aa824aba1cc6f81cb3f4131', -1, 1746207780, 1746207780, '03930843', -9, 0, 0)

Line : 187
File : sessions.php