这是我的 .tex 文档，我正在使用 编译为 pdf 格式pdflatex a.tex。它抛出一个错误，
! LaTeX Error: Missing \begin{document}
当我继续之后R，它给出了很多错误，
Missing character: There is no n in font nullfont!
Missing character: There is no e in font nullfont!
Missing character: There is no w in font nullfont!
Missing character: There is no d in font nullfont!
Missing character: There is no e in font nullfont!
Missing character: There is no s in font nullfont!
Missing character: There is no t in font nullfont!
Missing character: There is no l in font nullfont!
Missing character: There is no a in font nullfont!
Missing character: There is no b in font nullfont!
Missing character: There is no e in font nullfont!
Missing character: There is no l in font nullfont!
Missing character: There is no [ in font nullfont!
Missing character: There is no 2 in font nullfont!
Missing character: There is no ] in font nullfont!
文档内容：
\documentclass[11pt]{article}
\usepackage{pdfpages}
\begin{document}
\begin{verbatim}
On manager end, kafka & zookeeper must be up & running,
#jps
\end{verbatim}
\includepdf{./jps.pdf}
\end{document}
我使用的图像includegraphics正在丢失分辨率。因此，我将它们导出为pdf booksgimp，然后将includepdf它们添加到页面中。