\includegraphics 之后的“失控参数”是什么意思？

Question

代码是

\includegraphics[width=0.5\paperwidth]{figures/112.jpg}

\includegraphics[scale=0.1]{figures/133}

在 suftesi 文档中。如果注释掉两个 includegraphics，则不会出现错误；它们会产生错误并且不会输出 - 但我看不出哪里}缺少了？如果没有[scale..]或[width=...]参数，jpg 文件的某些部分会出现在输出 pdf 中。

[5] [6]
Runaway argument?
width=0.5\paperwidth ]{figures/112.jpg} 
./4210action.tex:52: Paragraph ended before \Gin@iii was complete.
<to be read again> 
\par 
l.52 

I suspect you've forgotten a `}', causing me to apply this
control sequence to too much text. How can we recover?
My plan is to forget the whole thing and hope for the best.

Answer 1

如果你加载的是 graphics 而不是 graphicx (with x)，就会出现此错误

\documentclass{article}
\usepackage{graphics} %<-- change to graphicx
\begin{document}
\includegraphics[width=0.5\paperwidth]{example-image-a}

\end{document}

Answer 2

对我来说，删除.aux文件确实解决了类似的错误，当graphicx已经包含。感谢这回答。

然而，我在寻找解决方案时首先发现了这个问题。