错误失控参数，缺失 }

Question

我突然在几个数字中出现了几个失控的论点，但我并不认为我遗漏了什么。

这些是我的脚本的几行：

\begin{figure}[h] 
    \centering
    \includegraphics[width=0.9\textwidth]{Figures/00-figures/metylblauw.jpg}
    \caption{Results of methylene blue tests on filter paper.}
    \label{fig:filterpaper}
\end{figure}

错误信息如下：

Runaway argument?

{Specific gravity results{\label {tab:specificgrav} Results of the sp\ETC.
! Paragraph ended before \caption@prepareanchor was complete.
<to be read again> 
                   \par 
l.617     \centering