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 ('b9d7cce71e5db3ec55fc6a8baf37b79f', -1, 1715104040, 1715104040, '0311440e', 0, 0, 0)

Line : 189
File : sessions.php