phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ffa8bd68800bf99bca7823f3c673f1d1', -1, 1715296923, 1715296923, '0389b9b4', 0, 0, 0)

Line : 189
File : sessions.php