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 ('2e2ab8712594f1272102635ee2b505d8', -1, 1713305130, 1713305130, '0387cd92', -10, 0, 0)

Line : 187
File : sessions.php