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 ('80e578ed434d044de1626b4b0af9bd6b', -1, 1730420203, 1730420203, '0316d9c1', -2, 0, 0)

Line : 195
File : sessions.php