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 ('d85f7fee1c6b0d5ba96a6d1699f58eb0', -1, 1714355340, 1714355340, '12dd92df', -4, 0)

Line : 158
File : sessions.php