為什麼我得到未定義的控制序列？

Question

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發布程式碼片段會讓人們很難幫助您。請務必發布以開頭\documentclass和結尾的完整的最低工作範例\end{document}。如果沒有這一點，就需要大量額外的工作來幫助您，特別是找出您的問題。

文件的一般結構baposter是：

\documentclass[a0paper]{baposter}
\usepackage{...}
\begin{baposter}
{settings}
{Eye Catcher}
{Title}
{Author}
{University Logo}
\begin{posterbox}[name=box1, column=0, span=1]{Header}
Posterbox content
\end{posterbox}
\end{baposter}
\end{document}

{Eye Catcher} {Title} {Author} {University Logo}必須嚴格遵守順序。您發布的代碼不遵循此順序，並且{author}丟失。

這是一個完整的 MWE，其中包含有關按鍵功能的各種註釋。根據先前的評論進行了各種更正。我還鼓勵您閱讀手冊以了解每個選項的實際用途，並查看baposterTeX.SE 上發布的其他答案。

\PassOptionsToPackage{table}{xcolor}
\documentclass[landscape,a0paper,fontscale=0.38]{baposter}
\usepackage[english]{babel}
\usepackage[utf8x]{inputenc}
\usepackage{hhline}
\usepackage{mathtools}
\usepackage{multirow}
\usepackage{float}
\usepackage{graphicx}
\usepackage[colorinlistoftodos]{todonotes}
\usepackage{nonfloat}
\newcommand\myfigure[1]{
\medskip\noindent\begin{minipage}{\columnwidth}
\centering
\end{minipage}\medskip}
\usepackage{lipsum}
\usepackage{amsfonts}
\usepackage{booktabs}
\usepackage{siunitx}
\newcommand{\lf}[3]{$\frac{#1}{4}\alpha_1+\frac{#2}{4}\alpha_2+\frac{#3}{4}\alpha_3$}
\definecolor{mygray}{gray}{.9}
\graphicspath{{figures/}}
\usepackage{float}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{booktabs}
\usepackage{enumitem}
\usepackage{mathpazo}
\usepackage[font=small,labelfont=bf,justification=centering]{caption}
\captionsetup{skip=0pt}
\usepackage{multicol}
\setlength{\columnsep}{1.5em}
\setlength{\columnseprule}{0mm}
\usetikzlibrary{shapes,arrows}
\usepackage{hanging}
\newcommand{\compresslist}{
\setlength{\itemsep}{1pt}
\setlength{\parskip}{0pt}
\setlength{\parsep}{0pt}
}

\begin{document}

\background{
    \begin{tikzpicture}[remember picture,overlay]%
    %the poster background color
    \fill[fill=blue!25!white] (current page.north west) rectangle (current page.south east);
    %the header
    \fill [fill=orange!25!white] (current page.north west) rectangle ([yshift=-\headerheight] current page.north east);
    \end{tikzpicture}
}    

\begin{poster}{
        grid=false,
        columns=6, % how many columns 1-6
        colspacing=5.0mm, % spacing between the columns
        %        headerheight=0cm, % the height of the header for the title
        background=user, %user or none or plain
        headerheight=0.1\textheight,
        eyecatcher=true, %turn left logo on/off
        %posterbox environment options
        headerborder=closed, % see the baposter manual for the rest
        borderColor=darkgray,
        headershape=rectangle,
        headershade=plain,
        headerColorOne=green!40!white,
        textborder=rectangle,
        boxshade=plain,
        boxColorOne=green!10!white,
        headerFontColor=black,
        textfont=\scriptsize, % font definition for body of posterbox
        headerfont=\scshape, % font definition for header of posterbox
        linewidth=1pt,
    }
    {\includegraphics[height=5em]{example-image-a}\hspace{1cm}} % Eyecatcher on the left
    {\bfseries\scshape Modeling the effects of crayfish invasion and drought on crayfish population dynamics
            \vspace{0.125em}} % Title - the default font size is \Huge - there are few bold small cap fonts so adding \bfseries will depend on which font is chosen. Here it does nothing.
    {Author} % Author - the default font size is \Large
    {\includegraphics[height=5em]{example-image-b}} % Logo
\begin{posterbox}[name=box1, column=0, span=1]{Header}
    Some text
\end{posterbox}

\end{poster}
\end{document}

Answer 1