phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6e4f2eb3a91a3f5692f6b13811d0f6bf', -1, 1715005400, 1715005400, '12e10b62', -9, 0, 0)

Line : 189
File : sessions.php