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 ('caf303f8d9e305e3bb1c61060aeafe4b', -1, 1714257703, 1714257703, '12dd92df', -4, 0)

Line : 158
File : sessions.php