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 ('b27a4ea4ae2495a02d70b416721f4511', -1, 1715004964, 1715004964, '12ddef94', -9, 0, 0)

Line : 189
File : sessions.php