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 ('2791665a22b18a1b106bfc01cd9a57ed', -1, 1714339355, 1714339355, '038df499', 17, 0)

Line : 158
File : sessions.php