Consider this script:
\documentclass{report}
\usepackage{enumerate}
\begin{document}
\begin{enumerate}[label=\arabic*)]
\item item 1
\end{enumerate}
\end{document}
I would like the labels to be "1)" instead of "1." as per default. Therefore I use [label=\arabic*)] following p. 3 at http://mirror.datacenter.by/pub/mirrors/CTAN/macros/latex/contrib/enumitem/enumitem.pdf
However, when I compile there is an error:
! Missing number, treated as zero.
<to be read again>
\c@*
l.4 \begin{enumerate}[label=\arabic*)]
What is wrong?

enumitempackage, notenumerate. – Apr 07 '19 at 07:57enumerate? – Viesturs Apr 07 '19 at 07:59