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) VALUES ('86ee49ee71536a0ffb5fa9726a7b8250', -1, 1714052113, 1714052113, '0389b420', -9, 0)

Line : 158
File : sessions.php