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 ('96298437fc615b95dc2c4be14337c7f8', -1, 1730489837, 1730489837, '03946bc1', -1, 0, 0)

Line : 195
File : sessions.php