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 ('e71cc4d9c0e17bb4ba47300c608908e0', -1, 1757277628, 1757277628, 'd849d8bb', 2, 0, 0)

Line : 187
File : sessions.php