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 ('7ea51c599e35e4689a5b68891114377f', -1, 1714039117, 1714039117, '12ddbb79', 3, 0, 0)

Line : 187
File : sessions.php