\documentclass[a4paper, 12pt]{skthesis}
\usepackage{lgrind}
\usepackage{cmap}
\usepackage{hyperref}
\usepackage{url}
\usepackage{fontawesome}
\usepackage{csquotes}
%\usepackage[T2A]{fontenc}
\begin{document}
\include{chapters/cover} % Your title pages, abstracts and acknowledgments
\include{chapters/contents} % Probably you don't need to change it
\include{chapters/chap1}
\include{chapters/chap2}
\include{chapters/chap3}
\include{chapters/chap4}
\include{chapters/chap5}
\appendix
\include{chapters/appa}
\include{chapters/appb}
\include{chapters/biblio}
\end{document}
