删除一段代码时出现错误消息“此处没有结束行”

Question

这些是在海报模板中构建框的语法：

\headerbox{Results}{name=model, span=3,column=0, below=SNP}{ \large \sf
% The result section is split up in two pieces 
% PART 1 (left)
\begin{minipage}{0.49\linewidth}
    % add a description
    \begin{description} 
        % Set condensed list
        \compresslist 
        % set font size
        \large
        \item[{\color{BL} criterion A}] text ...\\
    \end{description}
    % align left
    \begin{flushleft} 
    {
    \footnotesize 
    \begin{tabular}{llcc} 
    \hline
    criterion& method & distribution $p$ & type I (w.r.t. $\alpha$) \\
    \hline
    A   & ++    & uniform & nominal\\
    B   & ++    & uniform & more conservative \\
    C   & --    & uniform & nominal \\
    D   & --    & uniform & slightly more liberal \\
    \hline
    \end{tabular} 
    }
    \vspace{2cm}\\
    %include figure
    \includegraphics[width=0.9\linewidth, page=3]{f4.pdf}
    \end{flushleft}
    \begin{description}
        \item[{\color{BL} criterion B}] ...
    \end{description}
    \vfill
\end{minipage}  
% PART 2 (right)    
\begin{minipage}{0.49\linewidth}
    \begin{description}
        % Set condensed list
        \compresslist 
        % set font size
        \large
        \item[{\color{BL} Criterion C }] ...
        \item[{\color{BL} Criterion D }] ...
    \end{description}
    \begin{flushleft}
    {
    \footnotesize 
    \begin{tabular}{llcc} 
    \hline
    measure     & parameter     & $t$ value     & $p$ value  \\
    \hline
    1   & $\beta_0$     & $1.28$    &   $<0.01$ \\
    2   & $\beta_0$     & $1.28$    &   $<0.01$ \\
    3   & $\beta_0$     & $1.28$    &   $<0.01$ \\
    4   & $\beta_0$     & $1.28$    &   $<0.01$ \\
    5   & $\beta_0$     & $1.28$    &   $<0.01$ \\
    \hline
    \end{tabular} 
    }
    \vspace{2cm} \\
    %include figure
    \includegraphics[width=0.9\linewidth, page=3]{f4.pdf}
    \end{flushleft}
    \vfill
\end{minipage}          
}

我想要在这个框中包含的结构是：

所以我需要删除构造表格的语法，然后我删除这部分：

\begin{flushleft} 
        {
        \footnotesize 
        \begin{tabular}{llcc} 
        \hline
        criterion& method & distribution $p$ & type I (w.r.t. $\alpha$) \\
        \hline
        A   & ++    & uniform & nominal\\
        B   & ++    & uniform & more conservative \\
        C   & --    & uniform & nominal \\
        D   & --    & uniform & slightly more liberal \\
        \hline
        \end{tabular} 
        }
        \vspace{2cm}\\
        %include figure
        \includegraphics[width=0.9\linewidth, page=3]{f4.pdf}
        \end{flushleft}
        \begin{description}
            \item[{\color{BL} criterion B}] ...
        \end{description}
        \vfill

我的问题是：发生的错误是No line here to end。我发现问题不是因为我没有完全删除这段代码。我尝试了一些在线找到的解决方案，例如，添加\leavevmode \\。我也检查了当前网站上的解决方案，但它们不起作用。有人能提供其他解决方案吗？谢谢。