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 ('0222671f6263a85c8ad23f11665a7602', -1, 1709115381, 1709115381, '2cd24d49', -7, 0, 0)

Line : 187
File : sessions.php