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 ('d287e41bdbe6d1026a2b5828b60e6ada', -1, 1754867037, 1754867037, 'd849d8fd', 7, 0, 0)

Line : 189
File : sessions.php