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 ('d6d1a53a51dbeaa2e96b5d4e54d89cfb', -1, 1715313807, 1715313807, '030efddd', 0, 0, 0)

Line : 189
File : sessions.php