I'm new to LaTeX. I am trying to include a PDF file using Overleaf and I don't know why I got several errors: "undefined control sequence", "PDF not found". I think I have uploaded the PDF file right, I don't know what might be the problem.
I don't know how to copy the exact text of the error so I have attached some images.
I have read some posts about updating something in MiKTeX. I don't know what MiKTeX is and I don't know if I am using it.
This is the structure of my document:
\documentclass{article}
% General document formatting
\usepackage[margin=0.7in]{geometry}
\usepackage[parfill]{parskip}
\usepackage[utf8]{inputenc}
\usepackage[final]{pdfpages}
% Related to math
\usepackage{amsmath,amssymb,amsfonts,amsthm}
\begin{document}
Name, date, Exercise X
\section*{Part a}
\section*{Part b}
\includepdf[pages=1-2]{ProblemasPNG.pdf}
\end{document}