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 ('7035c0c2c482dfd89c64d4f0da59caef', -1, 1730415484, 1730415484, '0380cae6', -1280, 0, 0)

Line : 195
File : sessions.php