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) VALUES ('23b37f9b0cee76c8e4b9db22bbdf7321', -1, 1714359946, 1714359946, '0392dd34', -8, 0)

Line : 158
File : sessions.php