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 ('e68f8a257a5bd747c1b6e7b0de2e8d2a', -1, 1715194986, 1715194986, '0389d580', -9, 0, 0)

Line : 189
File : sessions.php