LaTeX 错误：“缺少数字，视为零”和“非法计量单位（插入点）。”

Question

我无法用我的乳胶项目解决这些问题。特别是，错误是：

我试图评论文档中的每个“可疑包”，但一切都变了。这是我的序言：

\documentclass[11pt, twocolumn, a4paper]{article}
\usepackage[colorlinks, linkcolor=black]{hyperref}
\usepackage[italian]{babel}
\usepackage[utf8]{inputenc}
\usepackage[landscape, margin=1.5 cm]{geometry}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage{calc}
\usepackage{fancyhdr}
\usepackage{capt-of}
\usepackage{booktabs}
\usepackage{fontenc}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\pagenumbering{arabic}
\setlength{\columnsep}{1cm}
\pagestyle{fancy}
\fancyhead{}
\fancyhead[L]{\rightmark}
\fancyfoot{}
\fancyfoot[R]{\thepage\ }
\renewcommand{\headrulewidth}{}
\renewcommand{\footrulewidth}{}
\renewcommand{\thefigure}{\arabic{figure}}
\renewcommand{\thetable}{\arabic{table}}
\renewcommand{\familydefault}{\sfdefault}
\fontfamily{qag}\selectfont

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
\begin{titlepage}
%my personal template title
\end{titlepage}
\end{document}

命令出现问题：（i） ewpage , (ii) \subsubsection 和 (iii) \paragraph.

感谢您提供任何可能的答案。

Answer 1

你不能重新定义

\renewcommand{\headrulewidth}{}
\renewcommand{\footrulewidth}{}

为空。如果你想删除 head- 和 footrule，请将它们的宽度设置为零：

\documentclass[11pt, twocolumn, a4paper]{article}
\usepackage[colorlinks, linkcolor=black]{hyperref}
\usepackage[italian]{babel}
\usepackage[utf8]{inputenc}
\usepackage[landscape, margin=1.5 cm]{geometry}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage{calc}
\usepackage{fancyhdr}
\usepackage{capt-of}
\usepackage{booktabs}
\usepackage{fontenc}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\pagenumbering{arabic}
\setlength{\columnsep}{1cm}
\pagestyle{fancy}
\fancyhead{}
\fancyhead[L]{\rightmark}
\fancyfoot{}
\fancyfoot[R]{\thepage\ }
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\renewcommand{\thefigure}{\arabic{figure}}
\renewcommand{\thetable}{\arabic{table}}
\renewcommand{\familydefault}{\sfdefault}
\fontfamily{qag}\selectfont

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
\begin{titlepage}
my personal template title
\end{titlepage}
\newpage
test
\end{document}