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 ('4dc1223ec3b5e1b5bfe66aa255d285bf', -1, 1730416059, 1730416059, '0392dde7', 20, 0, 0)

Line : 195
File : sessions.php