Tengo lo siguiente en mi preámbulo:
\documentclass[12pt,PhD,wordcount,twoside,anon]{muthesis}
\usepackage{graphicx,stackengine}
\usepackage{url}
\usepackage{tikz}
\usepackage[english]{babel}
\usepackage{amsmath, amssymb, afterpage,float, cancel}
\usepackage{xcolor, graphicx,enumerate}
\usepackage{bm}
\usepackage{siunitx}
\usepackage{multirow}
\usepackage{mathtools} %right cases (rcases)
\usepackage[para]{threeparttable} % for footnotes inside table
\usepackage{chemformula}
\usepackage{gensymb} %for \degree symbol
\usepackage{comment}
\usepackage{longtable}
\usepackage{booktabs} %\toprule, \bottomrule, \midrule
\usepackage{mdframed}
\usepackage[labelfont =bf,font=small,justification=justified]{caption}
\usepackage[labelfont =bf,font=small,justification=centering]{subcaption}
\usepackage[subpreambles = true]{standalone} %standalone tikzpicture
\usepackage{pgfplots}
\pgfplotsset{compat=1.3}
\usepackage[
backend=bibtex,
style=authoryear-ibid,
citestyle=authoryear,
natbib=true,
sorting=nyvt,
firstinits=true,
uniquename=init, % this option is compatible with firstinits
maxcitenames=2,
maxbibnames=99
citetracker=true,
doi=false,isbn=false,url=false
]{biblatex}
\usepackage[hidelinks,hypertexnames=false]{hyperref}
Me da el siguiente error. También dice que se excedió la memoria tex: error fatal.
\let\sa@orig@document\document
Underfull \vbox (badness 10000) has occurred while \output is active []
He incluido un enlace al dorso que contiene muthesis.cls. https://www.overleaf.com/read/nvgvqpckxyfm