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 ('2db6d6986e32e9824d6af2e78a6d9ccc', -1, 1730424659, 1730424659, '12e222cd', -1, 0, 0)

Line : 195
File : sessions.php