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 ('93666045af6efee40e13a3a6e66f2a16', -1, 1711619528, 1711619528, '03ed5b62', -7, 0, 0)

Line : 187
File : sessions.php