all done

general-template/preamble.tex

@@ -33,6 +33,12 @@
 \usepackage{tikz}
 \usepackage{titletoc}
 
+% add this to the preamble (near your other \usepackage lines)
+\usepackage{pgfplots}
+\pgfplotsset{compat=1.18} % or compat=newest if you prefer
+\usepgfplotslibrary{colormaps} % enables 'viridis' etc.
+
+
 \newcommand\mycommfont[1]{\footnotesize\ttfamily\textcolor{blue}{#1}}
 \SetCommentSty{mycommfont}
 \newcommand{\incfig}[1]{%
@@ -40,6 +46,8 @@
     \import{./figures/}{#1.pdf_tex}
 }
 
+
+
 \usepackage{tikzsymbols}
 \tikzset{
 	symbol/.style={