我更改了我的参考书目列表，然后又改回来了。在更改之前，它一直有效，但现在即使参考书目为空，它也无法编译。我的文档如下
\documentclass[a4paper, leqno, oneside] {report}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lscape}
\usepackage{caption}
\usepackage{subfig}
\usepackage[section]{placeins}
\usepackage{amsmath, amsthm, amssymb}
\usepackage{listings}
\usepackage{url}
\usepackage{longtable}
\usepackage{multirow}
\usepackage{verbatim}
\usepackage{kbordermatrix}
\usepackage{graphicx}
\usepackage[table]{xcolor}
\usepackage[swedish, english]{babel}
%\usepackage{geometry}
\usepackage{hvfloat}
\usepackage{booktabs}
\usepackage[textwidth=15cm, textheight=23cm]{geometry}
\usepackage[nottoc]{tocbibind}
\usepackage[toc]{appendix}
\usepackage{rotating,caption,booktabs}
\begin{document}
\bibliographystyle{unsrtnat} %{amsplain}
\bibliography{Bibliography}
\include{Bibliography}
\end{document}
与 Bibliography.tex 一起
\begin{thebibliography}{99}
\bibitem{book1}
A title \textit{Pensionsmyndigheten}
\end{thebibliography}
它为什么停止工作了？我该如何修复它？