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 ('69290f855e14a4cb69a28499f9b99931', -1, 1714810381, 1714810381, '030c4792', -4, 0, 0)

Line : 187
File : sessions.php