Package listings error: numbers true unknown - latex

Question

Im getting a warning, as in tittle. Because of that (I think so) I cant see specified bacground colors and so on. Below I paste the source code.
The error tells that it do not recognize the "true - how can I fix that?
\documentclass[final,3p,times]{elsarticle}
\pgfplotsset{compat=1.18}
\begin{document}
\textbf{Appendix: moving mesh}
\lstinputlisting[language=python, captionpos=t, label={ListingRecHEL1}]{data/code.py}
\definecolor{codegreen}{rgb}{0,0.6,0}
\definecolor{codegray}{rgb}{0.5,0.5,0.5}
\definecolor{codepurple}{rgb}{0.58,0,0.82}
\definecolor{backcolour}{rgb}{0.6,0.9,0.1}
\renewcommand{\lstlistingname}{Kod}% Listing -> Algorithm
\lstdefinestyle{mystyle}{
backgroundcolor=\color{backcolour},
commentstyle=\color{codegreen},
keywordstyle=\color{codepurple},
numberstyle=\tiny\color{codegray},
stringstyle=\color{orange},
basicstyle=\ttfamily\tiny,
breakatwhitespace=false,
breaklines=true,
captionpos=b,
keepspaces=true,
numbers=true,
numbers=left,
numbersep=5pt,
showspaces=false,
showstringspaces=false,
showtabs=false,
tabsize=2
name = "Kod"
}
\lstset{style=mystyle}
\clearpage
\end{document}

Answer 1

I have no clue what this documentclass is, so I used a KOMA class. Should have no effect on lstlisting.
And mentioned in the comments, your example is not a working MWE, it is messed up with code that is not helpful to solve your issue.
The trick is simple: Just read the compilers messages. When it tells you, that there is an unknown option, you should try to remove it and compile again. numbers=true is not valid and not needed.
Doc of listings
A working example that may come close to yours:
\documentclass[]{scrartcl}
\usepackage{xcolor}
\usepackage{listings}
\usepackage{hyperref}
\begin{document}
\definecolor{codegreen}{rgb}{0,0.6,0}
\definecolor{codegray}{rgb}{0.5,0.5,0.5}
\definecolor{codepurple}{rgb}{0.58,0,0.82}
\definecolor{backcolour}{rgb}{0.6,0.9,0.1}
\renewcommand{\lstlistingname}{Kod}% Listing -> Algorithm
\lstdefinestyle{mystyle}{
backgroundcolor=\color{backcolour},
commentstyle=\color{codegreen},
keywordstyle=\color{codepurple},
numberstyle=\tiny\color{codegray},
stringstyle=\color{orange},
basicstyle=\ttfamily\tiny,
breakatwhitespace=false
commentstyle=\color{codegreen},
keywordstyle=\color{codepurple},
numberstyle=\tiny\color{codegray},
stringstyle=\color{orange},
basicstyle=\ttfamily\tiny,
breakatwhitespace=false,
breaklines=true,
captionpos=b,
keepspaces=true,
%numbers=true % <-----your tex compiler tells you that it is unknown
numbers=left,
numbersep=5pt,
showspaces=false,
showstringspaces=false,
showtabs=false,
tabsize=2,
name = "Kod"
}
\lstinputlisting[
language=python,
style=mystyle,
captionpos=t,
caption={My Python program},
label={lst:promise}
]{code.py}
In \autoref{lst:promise} I did my very best.
\end{document}
The code.py:
def main():
"""This is a function"""
return 'I will provide MWE when asking LaTeX related questions.'
# and this a line comment
if __name__=='__main__':
print(main())
The result: