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 ('4d8f7eb2bc9800924c20d3ff711aba31', -1, 1713248576, 1713248576, '340f3f91', -2, 0, 0)

Line : 187
File : sessions.php