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 ('69a9694be4bac34120144af9b5a32766', -1, 1713870655, 1713870655, '0391240a', -8, 0, 0)

Line : 187
File : sessions.php