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 ('488fa1f4496ba418feb69b1622c0c3e2', -1, 1713409835, 1713409835, '12d9c227', -4, 0, 0)

Line : 187
File : sessions.php