# cleveref Error:! TeX capacity exceeded, sorry [input stack size=5000]

If I use cleveref tool, I get the following error:

! TeX capacity exceeded, sorry [input stack size=5000].

To totally understand the issue, I give you complete original tex code: as:

\RequirePackage{fix-cm}

%
\documentclass[smallextended]{svjour3}                 % onecolumn (standard format)
\smartqed  % flush right qed marks, e.g. at end of proof
\usepackage{amsmath} % for \boldsymbol macro
\usepackage{bm}      % for \bm macro
\usepackage[numbers,sort&compress]{natbib}
\usepackage{booktabs,makecell,tabularx}
\usepackage{commath}
\usepackage{amssymb}
\usepackage{multirow,caption}
\usepackage{subfig}
\usepackage{graphicx}
\usepackage{hyperref}
\usepackage{cleveref}

\begin{document}

\title{12234}

\author{abcde}

%\authorrunning{Short form of author list} % if too long for running head

\institute{Zasdasdas    %  \\
%             \emph{Present address:} of F. Author  %  if needed
}

\maketitle

\begin{abstract}
1232445345
\end{abstract}

\section{Introduction}

%%%
12312343
%%%
\end{document}
% end of file template.tex


The svjour3 class uses a low level command, which breaks with newer versions of the LaTeX kernel.

You can solve the issue by calling the class with the envcountsect option. I'm afraid that without updating the class there is no sensible way to fix the problem.

\documentclass[
smallextended,
envcountsect,
]{svjour3} % onecolumn (standard format)
\usepackage{hyperref}
\usepackage{cleveref}

\smartqed  % flush right qed marks, e.g. at end of proof

\begin{document}

\title{12234}

\author{abcde}

\authorrunning{Short form of author list} % if too long for running head

\institute{Zasdasdas    %  \\
%             \emph{Present address:} of F. Author  %  if needed
}

\maketitle

\begin{abstract}
1232445345
\end{abstract}

\section{Introduction}

%%%
12312343
%%%
\end{document}


I removed all packages that are unnecessary to reproduce the issue.

• it is now solved! – ABCDEMMM Mar 7 at 23:24