我不知道如何修复这个问题 - 在我重启电脑之前它运行得很好！请帮忙！
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contents={%
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\includegraphics[width=\paperwidth,height=\paperheight,]{Group5aBG.png}
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\title{Pendulum Dynamics Investigation}
\author{\underline{Group 5a} \\ \\ Libby Warren \\ Lilly Damany-Pearce \\ Maria Nicanor \\ Freddie Goodman \\ Harry McWilliam \\ Elliott Browse-Phillips}
\date{6th March 2017}
\begin{document}
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\section*{Abstract}
1. Avoid notation if possible. Notation makes it really hard to search electronically. \\
2. Put the subject in context, e.g., "In a recent paper, T. Lehrer introduced the concept of left-bifurcled rectangles. He conjectured no such rectangles exist when the number of bifurcles nn is odd." \\
3. State your results, in non-technical language, if possible. "In this paper we show the existence of left-bifurcled rectangles for all prime nn." \\
4. Mention a technique, if there is a new one: "Our methods involve analytic and algebraic topology of locally euclidean metrizations of infinitely differentiable Riemannian manifolds". \\
5. Never, ever, ever, cite papers in the bibliography by giving citation numbers; the abstract is an independent entity that should stand on its own.
With focus to Newtonian dynamics, this investigation calls us to apply one of the most fundamental: Newton’s second law, $F = ma$. This was used extensively to model the dynamical system of a simple pendulum. \par
The model was set to feature a point particle of mass $m$, suspended from a pivoting fixed point, by a string of fixed length $l$, such that the pendulum was free to swing freely under the action of gravity, with gravitational acceleration $g \simeq 9.81 m s ^{-2}$ \par
\end{document}
答案1
错误是
\vspace{0}
\hspace{0}
Hspace 和 Vspace 都需要可以使用的单位
\vspace{0pt}
\hspace{0pt}
或者更简单地删除这些行。