我正在嘗試使用abntex2類別編譯這個簡單的文檔，但由於某種奇怪的原因，我收到以下兩個錯誤：
! Missing number, treated as zero.
<to be read again>
\relax
l.175 \chapter{Capítulo 1}
A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)
! Illegal unit of measure (pt inserted).
<to be read again>
\relax
l.175 \chapter{Capítulo 1}
Dimensions can be in units of em, ex, in, pt, pc,
cm, mm, dd, cc, nd, nc, bp, or sp; but yours is a new one!
I'll assume that you meant to say pt, for printer's points.
To recover gracefully from this error, it's best to
delete the erroneous units; e.g., type `2' to delete
two letters. (See Chapter 27 of The TeXbook.)
程式碼很簡單：
\documentclass[12pt,oneside,a4paper]{abntex2}
\begin{document}
\chapter{test}
\section{test}
\end{document}
答案1
編輯（Guilherme Z. Santos）：這個問題已經已報告並已修復在 TeX Live 2015 發行版中，如果除了以下解決方案之外您仍然遇到此問題，另一種嘗試是更新您的 TeX 發行版。
該類別似乎假定但不載入套件calc。
這有效
\documentclass[12pt,oneside,a4paper]{abntex2}
\usepackage{calc}
\begin{document}
\chapter{test}
a
\section{test}
\end{document}